Review of Palaeobotany and Palynology最新文献_第9页

A new Late Devonian plant assemblage in West Junggar, Xinjiang, China and its floral evolution during the Devonian 中国新疆准噶尔西部新发现的晚泥盆世植物群落及其在泥盆世的植物演化过程

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-04-14 DOI: 10.1016/j.revpalbo.2024.105112

Bing-Cai Liu , Kai Wang , Rui-Wen Zong , Jiao Bai , Yao Wang , Ning Yang , Yi Wang , Hong-He Xu

{"title":"A new Late Devonian plant assemblage in West Junggar, Xinjiang, China and its floral evolution during the Devonian","authors":"Bing-Cai Liu , Kai Wang , Rui-Wen Zong , Jiao Bai , Yao Wang , Ning Yang , Yi Wang , Hong-He Xu","doi":"10.1016/j.revpalbo.2024.105112","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105112","url":null,"abstract":"<div>Mid to Late Devonian witnessed the emergence of the first forest and global flora prosperity on the Earth. West Junggar, a distinct sub-terrain of the Kazakhstan Paleoblock, in which Middle to Upper Devonian plant fossil-rich deposits are exposed, that significantly contribute to our understanding of Devonian plant diversity and flora evolution. In this study, we report a new plant assemblage from the Hongguleleng Formation in the Kekesayi and western Yangzhuang sections of West Junggar, Xinjiang, China. The dominant palynomorphs in this assemblage are retusoid and laevigate trilete spores with occasional scolecodonts. Macroplants of the assemblage consist of tree-like and herbaceous lycopsids. At least two floral turnovers were documented in West Junggar during the Devonian. The first one occurred at the end of the Givetian Age and saw the transformation of the Hujiersite Flora dominated of herbaceous lycopsids, turning into the flora with arborescent plants as typical of the Zhulumute Flora. The second turnover might occur near the Frasnian-Famennian boundary and saw the forest of the Zhulumute Flora shifting into the Hongguleleng Flora with more widely-distributed members.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"325 ","pages":"Article 105112"},"PeriodicalIF":1.9,"publicationDate":"2024-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140551421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First fossil pod of Mezoneuron (Caesalpinioideae, Fabaceae) in Asia 亚洲首个豆荚化石（豆科）Mezoneuron

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-04-11 DOI: 10.1016/j.revpalbo.2024.105111

Yi-Shan Zhao , Teng-Xiang Wang , Lin-Bo Jia , Ai Song , Jian Huang , Tao Su

{"title":"First fossil pod of Mezoneuron (Caesalpinioideae, Fabaceae) in Asia","authors":"Yi-Shan Zhao , Teng-Xiang Wang , Lin-Bo Jia , Ai Song , Jian Huang , Tao Su","doi":"10.1016/j.revpalbo.2024.105111","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105111","url":null,"abstract":"<div>The genus Mezoneuron Desf. (Caesalpinioideae, Fabaceae) comprises 23 extant species distributed throughout the Old World tropics and subtropics, yet its fossil record is scarce with finds restricted to Europe and North America. Here, we report a new Mezoneuron pod fossil from the lower Miocene Sanhaogou Formation of Jinggu Basin in Southwest China, representing the first fossil occurrence of this genus in Asia and the only one within its current distribution range. The fossil presents a vascularized wing along the placental suture and with poorly developed, irregular reticulate venation, which are typical pod characters in Mezoneuron. With detailed morphological observation and comparison, it is assigned as a new species, namely M. zhekunii Y.S. Zhao, L.B. Jia et T. Su sp. nov. Together with the historic and modern distribution of Mezoneuron and its relatives, we propose that Mezoneuron originated in the Northern Hemisphere no later than the middle Eocene. Mezoneuron attained relatively low latitudes in Asia no later than the early Miocene, with our fossil representing the lowest latitudinal record. The oblique and fine wrinkles of pod probably suggest a papery texture and low weight observed in mature pods of some extant Mezoneuron species, which favors wind dispersal.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"325 ","pages":"Article 105111"},"PeriodicalIF":1.9,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140558919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Protocupressinoxylon baii sp. nov., a gymnospermous fossil trunk from the Upper Shihhotse Formation (Permian) of Yangquan City, Shanxi Province, North China 华北山西省阳泉市上石河子地层（二叠纪）出土的裸子植物树干化石--白皮原植物（Protocupressinoxylon baii sp.

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-04-03 DOI: 10.1016/j.revpalbo.2024.105110

Kaige Jiang , Keyu Wang , Jun Wang , Mingli Wan

{"title":"Protocupressinoxylon baii sp. nov., a gymnospermous fossil trunk from the Upper Shihhotse Formation (Permian) of Yangquan City, Shanxi Province, North China","authors":"Kaige Jiang , Keyu Wang , Jun Wang , Mingli Wan","doi":"10.1016/j.revpalbo.2024.105110","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105110","url":null,"abstract":"<div>A new permineralized gymnospermous fossil trunk with only secondary xylem being preserved, Protocupressinoxylon baii sp. nov., is described from the Upper Shihhotse Formation (Permian) in Yangquan City, Shanxi Province, North China. The pith, primary xylem, and bark are not preserved. The wood is pycnoxylic, composed of tracheids, rays, and axial parenchyma. True growth rings are absent. However, growth interruptions are well-developed. In cross section, tracheids in the growth interruption vary gradually in diameter from thin-walled, larger cells to thick-walled, smaller cells, and change at an opposite direction, forming a symmetrical boundary. Radial tracheidal pitting is uni- to biseriate. When uniseriate, pits are contiguous or separately arrayed. When biseriate, pits are mostly alternately arranged. Rims of Sanio and tangential pits are absent. The percentage of abietinean pitting of current fossil wood is 23.6%, and the araucarian pitting is 76.4%. Axial parenchymatous cells are irregularly distributed among the xylem tracheids with opaque contents. Rays are homogeneous, commonly uniseriate, and are 1–24 cells high. The cross-field pitting is mainly of the cupressoid type, and there are commonly 1–2, rarely 3–4 pits in each cross-field unit. The fossil trunk represents the first record of Protocupressinoxylon Eckhold from the Permian of the Cathaysia. Fungal hyphae present in tracheids and rays, demonstrating the association between the current trunk and fungi. The absence of true growth rings, and the presence of growth interruptions suggest suitable climatic conditions with episodic drought for the flourishing of plants during the time when the Upper Shihhotse Formation was deposited in the Permian.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"325 ","pages":"Article 105110"},"PeriodicalIF":1.9,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140539621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Longitudinal population dynamics of Mediterranean-Atlantic Arbutus during the last 30 ka 过去 30 ka 期间地中海-大西洋熊果树的纵向种群动态

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-03-31 DOI: 10.1016/j.revpalbo.2024.105099

Simone De Santis , Fabrizio Michelangeli , Francesco Spada , Donatella Magri

{"title":"Longitudinal population dynamics of Mediterranean-Atlantic Arbutus during the last 30 ka","authors":"Simone De Santis , Fabrizio Michelangeli , Francesco Spada , Donatella Magri","doi":"10.1016/j.revpalbo.2024.105099","DOIUrl":"10.1016/j.revpalbo.2024.105099","url":null,"abstract":"<div>The current distribution of the genus Arbutus in the Old World prompts questions about its long-term population dynamics, location and extent of refuge areas, and modern vulnerability in relation to climate change and human activity. Our work aims to address these questions by combining modern occurrence data with a comprehensive survey of pollen and macrofossil records. Range maps of past distribution have been produced for the last 32 ka to investigate geographical trends in population dynamics and the timing of the appearance of Arbutus across different biogeographical regions. In the Atlantic domain, Arbutus has been consistently present during the last 32 ka, even during the Last Glacial Maximum. In the central and eastern Mediterranean regions, it progressively increased since the beginning of the Holocene, appearing along the coasts of the Black Sea and in the Levant during the Middle Holocene. In addition, the dynamics of Arbutus in a number of peripherals stands (Ireland, Canary Islands, Cyrenaica, Crimea, and Black Sea coasts) is discussed. The palaeobotanical evidence suggests that the delayed emergence of eastern populations and peripheral stands in the fossil record may be ascribed to a very low population density, rather than to a sequential migration process from the western sectors of the range. The comparison of fossil records and modern occurrences highlights an overall temporal continuity between long-term persistence areas and current centers of gravity and calls for density-weighted ecological models that may contribute to an informed assessment of conservation actions and strategies.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"325 ","pages":"Article 105099"},"PeriodicalIF":1.9,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0034666724000502/pdfft?md5=0300f6efeaaa87cb0d85376517abe91c&pid=1-s2.0-S0034666724000502-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140403971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Neogene record of the dinoflagellate cyst genus Trinovantedinium Reid 1977 in the tropical Americas 美洲热带地区新近纪甲藻胞囊属 Trinovantedinium Reid 1977 的记录

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-03-30 DOI: 10.1016/j.revpalbo.2024.105100

Damián Cárdenas , Guillermo Rodríguez , Diego Pinzón , María Carolina Vargas , Felipe de la Parra , Stephen Louwye

{"title":"The Neogene record of the dinoflagellate cyst genus Trinovantedinium Reid 1977 in the tropical Americas","authors":"Damián Cárdenas , Guillermo Rodríguez , Diego Pinzón , María Carolina Vargas , Felipe de la Parra , Stephen Louwye","doi":"10.1016/j.revpalbo.2024.105100","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105100","url":null,"abstract":"<div>The genus Trinovantedinium Reid 1977 comprises eleven Neogene<img>Quaternary and one Paleogene dinoflagellate cyst taxa that have been successfully used for biostratigraphy. Combining new and published records of Trinovantedinium species in the Neogene of the tropical Americas, we report preliminary stratigraphic ranges for T. applanatum (Aquitanian<img>Recent), T. ferugnomatum (Burdigalian<img>Zanclean), T. glorianum (Burdigalian<img>Messinian), T. papula (Aquitanian<img>Zanclean), T. uitpensis (Aquitanian<img>Tortonian), T. variabile (Aquitanian<img>Recent) and T.? xylochoporum (Aquitanian<img>Messinian) in the region. Although the stratigraphic ranges of T. applanatum, T. variabile and T.? xylochoporum in the tropical Americas seem to be coetaneous with previous records elsewhere, the first appearance datums of T. ferugnomatum, T. glorianum and T. papula seem to be at least ∼2–3 Myr. older in the tropical Americas. In contrast, only the last appearance datum of T. glorianum seems to be ∼4 Myr. younger in the Northern Hemisphere. Our results demonstrate that the Cenozoic marine palynological record of the tropical Americas is therefore key to discriminate dinoflagellate cyst stratigraphic ranges across latitudes.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"325 ","pages":"Article 105100"},"PeriodicalIF":1.9,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140344359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A contribution to the knowledge of Cretaceous to Neogene Palynology in the Colombian Caribbean. 对哥伦比亚加勒比地区白垩纪至新近纪古生物学知识的贡献。

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-03-27 DOI: 10.1016/j.revpalbo.2024.105098

Angelo Plata-Torres , Andrés Pardo-Trujillo , José Abel Flores

{"title":"A contribution to the knowledge of Cretaceous to Neogene Palynology in the Colombian Caribbean.","authors":"Angelo Plata-Torres , Andrés Pardo-Trujillo , José Abel Flores","doi":"10.1016/j.revpalbo.2024.105098","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105098","url":null,"abstract":"<div>The palynological study of a composite section of 14 cores drilled from the Sinu-San Jacinto Basin in the Colombian Caribbean (NW South America) provides for the first time a Cenozoic palynostratigraphic zonation scheme for this region. In addition, the study of calcareous nannofossils and planktonic foraminifera allowed an independent calibration of the palynomorph assemblages to the international chronostratigraphic chart. The palynological results were compared with other studies for the northern part of South America and Colombia. Twelve Late Paleocene-Pliocene palynological zones are proposed for the Caribbean, some of which differ from those proposed for the Llanos and Llanos Foothills basins. A Paleocene palynological assemblage is reported for this part of the basin. Variations in the biostratigraphic ranges of some palynomorphs and new species with stratigraphic value are described. High diversity and abundance of dinoflagellate cysts in some stratigraphic intervals require more detailed study. Evidence of reworking in some stratigraphic intervals (e.g., Cretaceous and Oligocene in Miocene sediments), makes it necessary to be careful about the last appearance record of microfossils in exploration and geologic mapping.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"325 ","pages":"Article 105098"},"PeriodicalIF":1.9,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First evidence of Pinaceae and Fagaceae in the fossil wood record of the České středohoří Mts. (Czech Republic): A comprehensive study of fossiliferous sites in pyroclastic rocks surrounding the late Oligocene Milá stratovolcano 在捷克斯特热多霍日山（捷克共和国）的木材化石记录中首次发现松科和椑科植物：对晚渐新世 Milá 火山周围火成岩中化石地点的综合研究

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-03-26 DOI: 10.1016/j.revpalbo.2024.105097

Vít Koutecký , Jakub Mysliveček , Vladislav Rapprich , František Laufek , Zsolt Benkó , Jakub Sakala

{"title":"First evidence of Pinaceae and Fagaceae in the fossil wood record of the České středohoří Mts. (Czech Republic): A comprehensive study of fossiliferous sites in pyroclastic rocks surrounding the late Oligocene Milá stratovolcano","authors":"Vít Koutecký , Jakub Mysliveček , Vladislav Rapprich , František Laufek , Zsolt Benkó , Jakub Sakala","doi":"10.1016/j.revpalbo.2024.105097","DOIUrl":"10.1016/j.revpalbo.2024.105097","url":null,"abstract":"<div>A comprehensive anatomical and mineralogical study of fossil wood fragments from fields in the vicinity of Bečov and Břvany villages (NW Bohemia, Czech Republic) indicates that Taxodioxylon gypsaceum (Cupressaceae s.l.) predominates, but also identifies another coniferous wood: Pinuxylon parryoides (Pinaceae) and three angiosperms Quercoxylon böckhianum, Castanoxylon bavaricum and Lithocarpoxylon sp. (all Fagaceae). This paper therefore presents the first occurrence of Pinaceae and Fagaceae fossil wood in the volcanic rocks of the České Středohoří Mts. as well as its youngest palaeobotanical record in general, late Oligocene in age (26.56 ± 0.38 Ma). The samples were buried by alkaline pyroclastic deposits and were mineralized by carbonates. Two distinct depositional processes burying the fossil woods were identified. Closer to the vent, the woods occur in a near-vent pyroclastic fall deposits of the former pyroclastic cone, whereas more distant sites consist of pyroclastic flow deposits. Carbonate mineralization mostly consists of dolomite, but subordinate amounts of magnesite (likely the first time this is documented in fossil wood) as well as calcite and siderite are present. Only one sample collected in the same area, bearing clear signs of riverbed transport (Lithocarpoxylon sp.), was perfectly silicified, but its origin remains unclear.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"325 ","pages":"Article 105097"},"PeriodicalIF":1.9,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140405665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New findings of gymnosperms in the Middle Jurassic of the East European platform 东欧地台中侏罗世裸子植物新发现

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-03-24 DOI: 10.1016/j.revpalbo.2024.105095

Natalya Nosova , Andrey Fedyaevskiy , Anna Lyubarova

{"title":"New findings of gymnosperms in the Middle Jurassic of the East European platform","authors":"Natalya Nosova , Andrey Fedyaevskiy , Anna Lyubarova","doi":"10.1016/j.revpalbo.2024.105095","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105095","url":null,"abstract":"<div>The plant-bearing layers in the Stoilensky open mine (Belgorod Region, Russia) are dated to the middle Bathonian–early Callovian based on the dinoflagellate cysts and spore-pollen assemblages, and in the Mikhailovsky open mine (Kursk Region, Russia) – to the middle–late Bathonian based on palynological data. Representatives of Pseudotorellia are recorded in the Middle Jurassic of the Belgorod and Kursk regions for the first time. A new species, Pseudotorellia oskolica, is described from the Stoilensky open mine based on the unique morphological and epidermal features. Leaves of this species are very narrow, they are characterized by the presence of stomata on the adaxial leaf surface. The type material of Czekanowskia europea from the Middle Jurassic of the Pripyat depression in Belarus was restudied. The diagnosis for C. europea is provided, since only a description of this species was given in the original publication. Czekanowskia leaves are recorded from the Belgorod and Kursk regions for the first time. They are determined as C. europea based on the similar epidermal features as in the type leaves. A shoot of Pagiophyllum sp. and numerous leaf fragments of Podozamites sp. were found in association with C. europea in the Pripyat depression. These genera are recorded in Belarus for the first time. Findings of Pseudotorellia, Czekanowskia and Podozamites leaves in the Middle Jurassic floras of the East European platform are discussed.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"324 ","pages":"Article 105095"},"PeriodicalIF":1.9,"publicationDate":"2024-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fossil woods of Cryptocarya (Lauraceae) from the middle Miocene of Southwest China 中国西南中新世的隐翅木化石

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-03-22 DOI: 10.1016/j.revpalbo.2024.105096

Rui Zhang , Lu-Liang Huang , Shu-Feng Li , Tao Su , Alexei A. Oskolski

{"title":"Fossil woods of Cryptocarya (Lauraceae) from the middle Miocene of Southwest China","authors":"Rui Zhang , Lu-Liang Huang , Shu-Feng Li , Tao Su , Alexei A. Oskolski","doi":"10.1016/j.revpalbo.2024.105096","DOIUrl":"https://doi.org/10.1016/j.revpalbo.2024.105096","url":null,"abstract":"<div>The structure of lauraceous fossil woods from the middle Miocene deposits of the Dajie Formation of Ninger County, Yunnan Province, China has been studied. The occurrence of wide (> 7 seriate) rays in combination with the presence of scalariform perforation plates, the oil/mucilage cells in rays, axial parenchyma and among fibers as well as some other traits allow us to attribute the fossil woods to the extant genus Cryptocarya. We describe the woods as a new species C. latiradiata R. Zhang, T. Su & A. A. Oskolski sp. nov. (Lauraceae). This is an important improvement in the fossil record of Cryptocarya showing that this genus was widely ranged across southern China in the middle Miocene. The occurrence of the fossil woods of such termophyllous genus as Cryptocarya in the Dajie Formation suggests that this middle Miocene climate in southern Yunnan was frostless. This result is consistent with other evidence for the warm environment caused by complex topographic structures in this region since the middle Miocene linked to the successive uplift of the Tibetan Plateau and the Ailao Mountains. Particularly, it suggests that the Ailao Mountains in the middle Miocene were high enough to weaken the influence of the Asian Winter Monsoon on the territory of Yunnan.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"324 ","pages":"Article 105096"},"PeriodicalIF":1.9,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140296582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vegetation response to climate changes in the eastern Arctic during the Middle Gelasian age of the Early Pleistocene 早更新世中格拉西期北极东部植被对气候变化的反应

IF 1.9 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2024-03-18 DOI: 10.1016/j.revpalbo.2024.105094

Anatoly V. Lozhkin, Patricia M. Anderson, Julia A. Korzun, Ekaterina Yu. Nedorubova

{"title":"Vegetation response to climate changes in the eastern Arctic during the Middle Gelasian age of the Early Pleistocene","authors":"Anatoly V. Lozhkin, Patricia M. Anderson, Julia A. Korzun, Ekaterina Yu. Nedorubova","doi":"10.1016/j.revpalbo.2024.105094","DOIUrl":"10.1016/j.revpalbo.2024.105094","url":null,"abstract":"<div>Palynological analysis of sediments from El'gygytgyn Lake document vegetation changes in the Eastern Arctic from early marine isotope stage (MIS) 74 to late MIS 80 (c.2.1–1.9 MA) and close the last remaining gap in the El'gygytgyn pollen record. Cooler climates were characterized by a mix of Larix forest-tundra, shrub Betula tundra, and herb-dominated communities. During interglaciations, Larix forests with tree Betula and Alnus, and perhaps with a minor component of Picea and tree Pinus, characterized areas that today are tundra. These forests included a rich shrub understory of Betula, Duschekia, Salix, and Pinus pumila. Although MIS 77 has been considered a “super” interglaciation, the data do not indicate that this stage was exceptionally warm. Interstadial conditions are denoted by pollen assemblages that indicate the regional vegetation was dominated by Larix forest -tundra and an absence of Pinus pumila. The palynological results from this Early Pleistocene interval demonstrate the need to: 1) modify the El'gygytgyn age model; 2) reevaluate the relationship of sediment facies to climate change; and 3) reconsider the occurrence and/or definition of “super” interglaciations.</div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"324 ","pages":"Article 105094"},"PeriodicalIF":1.9,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0