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Geodigest Geodigest
Geology Today Pub Date : 2025-03-19 DOI: 10.1111/gto.12506
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引用次数: 0
Small round holes 小圆孔
Geology Today Pub Date : 2025-03-19 DOI: 10.1111/gto.12509
Stephen K. Donovan
{"title":"Small round holes","authors":"Stephen K. Donovan","doi":"10.1111/gto.12509","DOIUrl":"https://doi.org/10.1111/gto.12509","url":null,"abstract":"<p>Small round holes in shells—the trace fossil <i>Oichnus</i> Bromley—range throughout the Phanerozoic and were doubtless the spoor of diverse invertebrates. Their function may have been predatory, parasitic or a domicile, but how do we tell which from the fossil evidence?</p>","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"41 2","pages":"65-70"},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
How tiny foraminifera can play a massive role in understanding past climates 微小的有孔虫如何在理解过去的气候中发挥巨大作用
Geology Today Pub Date : 2025-03-19 DOI: 10.1111/gto.12510
James Barnet
{"title":"How tiny foraminifera can play a massive role in understanding past climates","authors":"James Barnet","doi":"10.1111/gto.12510","DOIUrl":"https://doi.org/10.1111/gto.12510","url":null,"abstract":"<p>Foraminifera comprise a group of heterotrophic zooplankton, which inhabit all depths within the world's oceans from the sunlit surface ocean to the depths of the abyssal plains. Many species build a shell of calcium carbonate (predominantly calcite), which records vital geochemical information from the oceans as it grows. Studies based on microscopic foraminifera are often at the forefront of pioneering research by palaeoclimatologists into Cretaceous–Cenozoic climates. In this feature, I summarize how foraminifera are obtained from the deep ocean and describe how rapidly evolving planktic foraminifera species can be used to date marine sediments. I then explain how benthic foraminifera can be used to reconstruct high-resolution long-term climate records, focusing on the use of stable oxygen isotopes to elucidate deep ocean temperatures from the greenhouse climate of the late Paleocene–early Eocene.</p>","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"41 2","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gto.12510","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Eocene gastropods of the New Forest, UK 英国新森林始新世腹足动物
Geology Today Pub Date : 2025-01-24 DOI: 10.1111/gto.12503
James Barnet
{"title":"Eocene gastropods of the New Forest, UK","authors":"James Barnet","doi":"10.1111/gto.12503","DOIUrl":"https://doi.org/10.1111/gto.12503","url":null,"abstract":"<p>Gastropods expanded into niches vacated by both terrestrial and marine organisms following the end-Cretaceous mass extinction, to become one of the dominant mollusc groups of the Cenozoic. The Selsey Formation of Eocene age was deposited within a shallow marine embayment across the Hampshire Basin (southern England) and contains a particularly diverse gastropod assemblage, forming the surface geology across the northern part of the New Forest National Park. Here, I use closely related gastropod species alive in the seas today to offer insights into the lifestyles and habitats of extinct Eocene species. By integrating this with other geological evidence, including gastropod preservation and other associated fossils, I paint a picture of the climate and environment on the New Forest seafloor during the Eocene epoch.</p>","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"41 1","pages":"26-37"},"PeriodicalIF":0.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gto.12503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Geology Today Index 2025 今日地质指数2025
Geology Today Pub Date : 2025-01-24 DOI: 10.1111/gto.12505
{"title":"Geology Today Index 2025","authors":"","doi":"10.1111/gto.12505","DOIUrl":"https://doi.org/10.1111/gto.12505","url":null,"abstract":"","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"41 1","pages":"i-viii"},"PeriodicalIF":0.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Tully monster remains an evolutionary enigma 塔利怪兽仍然是一个进化之谜
Geology Today Pub Date : 2025-01-24 DOI: 10.1111/gto.12501
Simon J. Braddy
{"title":"The Tully monster remains an evolutionary enigma","authors":"Simon J. Braddy","doi":"10.1111/gto.12501","DOIUrl":"https://doi.org/10.1111/gto.12501","url":null,"abstract":"<p>The affinities of the Tully monster (<i>Tullimonstrum gregarium</i>), from the late Carboniferous Mazon Creek Lagerstätte (~309 Ma) of Illinois, have been debated since its discovery. <i>Tullimonstrum</i> is up to ~35 cm long with a long proboscis ending in pincers and an elongate tapering body with caudal dorsal and ventral fins. This iconic evolutionary enigma or ‘weird wonder’ has been suggested to relate to arthropods, various ‘worms’, tunicates, conodonts, lancelets, vetulicolians and even vertebrates, but it may be a mollusc (Caenogastropoda) such as a pterotracheid (heteropod) pelagic gastropod, similar to <i>Pterotrachea coronata</i> (the ‘sea elephant’).</p>","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"41 1","pages":"19-22"},"PeriodicalIF":0.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The doctor who transported extinct reptiles by rail 用火车运送灭绝的爬行动物的医生
Geology Today Pub Date : 2025-01-24 DOI: 10.1111/gto.12502
Deborah Painter
{"title":"The doctor who transported extinct reptiles by rail","authors":"Deborah Painter","doi":"10.1111/gto.12502","DOIUrl":"https://doi.org/10.1111/gto.12502","url":null,"abstract":"","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"41 1","pages":"23-25"},"PeriodicalIF":0.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Geodigest Geodigest
Geology Today Pub Date : 2025-01-24 DOI: 10.1111/gto.12499
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引用次数: 0
Are all glacial diamictites glacial? Implications for palaeoclimatology 所有的冰川二晶岩都是冰川吗？对古气候学的影响
Geology Today Pub Date : 2025-01-24 DOI: 10.1111/gto.12500
Mats O. Molén
{"title":"Are all glacial diamictites glacial? Implications for palaeoclimatology","authors":"Mats O. Molén","doi":"10.1111/gto.12500","DOIUrl":"https://doi.org/10.1111/gto.12500","url":null,"abstract":"<p>Interpretations of the origins of pre-Pleistocene diamictites are in a state of flux, changing from glacial processes to sediment gravity flows (SGFs). Working methods for the study of such deposits need to be multi-proxy and process-sedimentological and not start with presumptions based on former models or interpretations. For instance, the detailed documentation of pavements, dropstones and erratics indicate that a shift from glaciogenic interpretations to SGFs for many pre-Pleistocene diamictites is needed. In another example, surface microtextures (SM) formed by glaciers display a combination of large-scale fractures and (irregular) abrasion, in contrast to non-glacial environments, and may therefore be used as a quick diagnostic working tool.</p>","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"41 1","pages":"10-18"},"PeriodicalIF":0.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cherrapunji, India: a land of waterfalls and speleothems, and the right place to become a UNESCO Global Geopark 印度切拉蓬吉：瀑布和岩浆之地，成为联合国教科文组织全球地质公园的理想之地
Geology Today Pub Date : 2024-11-26 DOI: 10.1111/gto.12497
Krishanu Datta
{"title":"Cherrapunji, India: a land of waterfalls and speleothems, and the right place to become a UNESCO Global Geopark","authors":"Krishanu Datta","doi":"10.1111/gto.12497","DOIUrl":"https://doi.org/10.1111/gto.12497","url":null,"abstract":"<p>Here, I propose that Cherrapunji, one of the wettest places on the planet, should be a potential site as a UNESCO Global Geopark. This location is not only associated with numerous majestic waterfalls, karst topography and multiple natural caves and speleothems with global scientific value, but is also of great significance to local people. These features have made this place an important area for geoscience research, as well as an important area for the development of geotourism. Cherrapunji is also the source of the ‘Meghalayan Age’, the most recent age in the geological timescale, defined by the International Commission on Stratigraphy (ICS) in 2018, for the past 4200 years of the Holocene. This article calls on researchers, government officials as well as the local people to take all the necessary steps to make Cherrapunji a UNESCO Global Geopark.</p>","PeriodicalId":100581,"journal":{"name":"Geology Today","volume":"40 6","pages":"243-247"},"PeriodicalIF":0.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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