Annales Societatis Geologorum Poloniae最新文献_第9页

Trace fossils from the Upper Cretaceous Capacete Formation, Sanfranciscana Basin, Central Brazil 巴西中部Sanfranciscana盆地上白垩纪Capacete组的化石痕迹

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2020-01-01 DOI: 10.14241/asgp.2020.15

Daniel Sedorko, L. Alessandretti, L. Warren, M. Verde, C. Rangel, Karen Yahaira Solano Ramos, R. Netto

{"title":"Trace fossils from the Upper Cretaceous Capacete Formation, Sanfranciscana Basin, Central Brazil","authors":"Daniel Sedorko, L. Alessandretti, L. Warren, M. Verde, C. Rangel, Karen Yahaira Solano Ramos, R. Netto","doi":"10.14241/asgp.2020.15","DOIUrl":"https://doi.org/10.14241/asgp.2020.15","url":null,"abstract":"The Upper Cretaceous Capacete Formation, from the intracratonic Sanfranciscana Basin, central Brazil, consists of epiclastic sediments with a significant aeolian contribution. This unit has been traditionally interpreted as deposited by alluvial fans distally grading to braided rivers in an aridto semiarid climate within the central part of southwestern Gondwana. Locally, some expositions with wide lateral extension show architectural elements indicative of deposition in meandering rivers, such as floodplain fines (FF) interbedded with crevasse splay (CR), lateral-accretion macroforms (LA), and channels (CH). Bioturbation within the meandering fluvial deposits is commonly associated with the floodplain element, mainly occurring in fine-grained sandstone and mudstone. The lateral-accretion elements and channel deposits are barren of trace fossils. Sandstone with climbing ripples (Sr) from the element CR show low bioturbation of meniscate trace fossils assigned to Taenidium, Beaconites, and Scoyenia ichnogenera. Simple vertical and horizontal burrows identified as Skolithos and Palaeophycus occur associated with Taenidium and Camborygma in sandstone facies (Sr, St and Sh), as well as rhizoliths, representing the Scoyenia ichnofacies. The predominance of trace fossils related to the FF and CR architectural elements attests to the colonization mostly by insects in episodic and vegetated flood plains of meandering river system from the Capacete Formation. Thus, despite the primarily arid to semiarid conditions interpreted for the inner parts of the newly formed South American continent during the Upper Cretaceous, our new data support deposition under humid conditions in some intervals of the Capacete Formation from Sanfranciscana Basin.","PeriodicalId":50776,"journal":{"name":"Annales Societatis Geologorum Poloniae","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66912812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

Sequence analysis, cyclostratigraphy and palynofacies of early Anisian carbonate ramp deposits, NW Bulgaria 保加利亚西北部早安尼期碳酸盐斜坡沉积层序分析、旋回地层及孢粉相

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2020-01-01 DOI: 10.14241/ASGP.2020.27

G. Ajdanlijsky, A. Strasser, A. Götz

{"title":"Sequence analysis, cyclostratigraphy and palynofacies of early Anisian carbonate ramp deposits, NW Bulgaria","authors":"G. Ajdanlijsky, A. Strasser, A. Götz","doi":"10.14241/ASGP.2020.27","DOIUrl":"https://doi.org/10.14241/ASGP.2020.27","url":null,"abstract":"A sequence- and cyclostratigraphic interpretation of early Anisian (Aegean) shallow-marine carbonate ramp deposits, exposed in outcrop sections west of Tserovo village, NW Bulgaria, is presented. The hierarchical pattern identified can be interpreted in terms of Milankovitch cyclicity with elementary sequences representing the precession (20-kyr) cycle, small-scale sequences the short eccentricity (100-kyr), and medium-scale sequences the long eccentricity (400-kyr) cycle. Palynology provides a robust stratigraphic framework. The study of sedimentary organic matter, revealing variations of terrestrial input, sorting and fragmentation of phytoclasts, and prominent acritarch peaks, allows the interpretation of environmental changes and contributes to the cyclostratigraphic and sequence-stratigraphic framework. The detailed documentation of syndepositional soft-sediment deformation structures confirms their laterally traceable distribution within the depositional sequences and makes them good palaeoenvironmental indicators. Anisian ramp systems of the western Tethyan realm thus were subjected to highly dynamic regimes, recording the interplay between sea-level changes in tune with orbital cycles and ramp morphology.","PeriodicalId":50776,"journal":{"name":"Annales Societatis Geologorum Poloniae","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66912891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

A tribute to Professor Joachim “Achim” Szulc (1954–2020) 向Joachim“Achim”Szulc教授致敬（1954–2020）

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2020-01-01 DOI: 10.14241/ASGP.2020.31

Michał Gradziński

引用次数: 1

Maastrichtian climate changes – the calcareous nannofossil record from flysch deposits of the Outer Carpathians 马斯特里赫特气候变化——外喀尔巴阡山脉的复理石质沉积物的钙质纳米化石记录

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2020-01-01 DOI: 10.14241/asgp.2020.19

A. Wierzbicki, M. Kędzierski

引用次数: 1

Ichnology of Upper Cretaceous–lower Palaeogene deep-sea deposits in the Haymana Basin of Central Anatolia 中安纳托利亚Haymana盆地上白垩统-下古近系深海矿床技术

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2020-01-01 DOI: 10.14241/ASGP.2020.33

H. Demircan, M. Görmüş

{"title":"Ichnology of Upper Cretaceous–lower Palaeogene deep-sea deposits in the Haymana Basin of Central Anatolia","authors":"H. Demircan, M. Görmüş","doi":"10.14241/ASGP.2020.33","DOIUrl":"https://doi.org/10.14241/ASGP.2020.33","url":null,"abstract":": Upper Cretaceous to lower Palaeogene carbonate and siliciclastic deposits that crop out widely in the Haymana and Polatlı districts (Ankara Province) of the Haymana Basin (Central Anatolia) are rich in larger benthic foraminifera, various macrofossils and ichnofossils. The ichnofossils of the Haymana and Yeşilyurt for mations were studied at five localities. The Upper Cretaceous siliciclastics of the Haymana Formation contain moderately diverse trace fossils, belonging to the deep-sea Nereites ichnofacies. The Paleocene siliciclastic and carbonate deposits of the Yeşilyurt Formation comprise similar trace fossils, which do not show significant chang es in comparison to the Haymana Formation. This indicates that the K-Pg boundary extinction event did not affect the ichnofauna with any longer consequences. The Upper Cretaceous coarser, siliciclastic deposits of the Haymana and Beyobası formations are rich in shallow-marine, larger benthic foraminifera, including species of Orbitoides, Omphalocyclus, Siderolites, Hellenocyclina, and Loftusia , whereas fine siliciclastic deposits contain abundant planktonic, open-marine fo raminifera, such as Globotruncana and Heterohelix . Palaeogene siliciclastic to carbonate deposits of the Kartal, Yeşilyurt and Çaldağ formations are rich in the larger, benthic foraminifera Nummulites, Discocyclina, Assilina and Alveolina . The larger foraminifers have been redeposited from nearby, shallow-marine parts of the basin. sequence stratigraphy, and sea-level changes across","PeriodicalId":50776,"journal":{"name":"Annales Societatis Geologorum Poloniae","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66913632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Burial and thermal history of the Upper Silesian Coal Basin (Poland) constrained by maturity modelling – implications for coalification and natural gas generation 受成熟度模拟约束的上西里西亚煤盆地(波兰)埋藏和热历史——对煤化和天然气生成的影响

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2020-01-01 DOI: 10.14241/asgp.2020.16

D. Botor

{"title":"Burial and thermal history of the Upper Silesian Coal Basin (Poland) constrained by maturity modelling – implications for coalification and natural gas generation","authors":"D. Botor","doi":"10.14241/asgp.2020.16","DOIUrl":"https://doi.org/10.14241/asgp.2020.16","url":null,"abstract":"Maturity modelling was carried out using basin and petroleum system modelling (BPSM) software in the lithologic sections of 17 wells of the Upper Silesian Coal Basin (Poland). The best fit between calculated and measured vitrinite reflectance (VR), porosity and density data was obtained by applying a thickness of eroded sedimentary overburden from 1700 m in the east to 4500 m in the west and relatively low to moderate heat flow values during the maximum late Carboniferous burial. These heat flow values were in the range 50–71 mW/m2, most likely owing to rapid deposition of molasse sediment that led to a downward deflection of the isotherms. The upper Carboniferous strata were heated to temperatures in the range c. 90–170 °C, which is in accordance with the moderate to high levels of thermal maturity of these rocks (c. 0.6–1.7%VR). The coal rank pattern was reached before the Variscan tectonic inversion at the transition between the Carboniferous and the Permian (c. 300 Ma). This coalification level was not overprinted by any later thermal processes. The coalification resulted in the generation of natural gases. The upper Carboniferous strata are characterized by early to late phases of hydrocarbon generation. The kerogen transformation ratio (c. 5–75%TR) values vary across the basin. Most coals generated significant amounts of hydrocarbons, which reached over 80 mg of methane per gram of total organic carbon. Although most hydrocarbons generated most likely were lost during the intense post-Variscan exhumation, the hydrocarbon potential of the basin is still substantial.","PeriodicalId":50776,"journal":{"name":"Annales Societatis Geologorum Poloniae","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66912399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 5

Interconnected chambered trace fossils, Pliocene lower Tipam Formation, Tripura, India 连通室迹化石，上新世下提帕姆组，印度特里普拉

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2020-01-01 DOI: 10.14241/asgp.2020.20

H. Rajkumar, V. Šimo

引用次数: 0

Sphenopsid and fern remains from the Upper Triassic of Krasiejów (SW Poland) Krasiejów(波兰西南部)上三叠世的桫椤和蕨类化石

IF 1.3 4区地球科学

Annales Societatis Geologorum Poloniae Pub Date : 2019-12-20 DOI: 10.14241/ASGP.2019.13

Grzegorz Pacyna

引用次数: 4

A crustoid graptolite lithoimmured inside a Middle Ordovician nautiloid conch from northern Estonia 爱沙尼亚北部中奥陶世鹦鹉螺体内的硬壳笔石