Results 31 to 40 of about 29,816 (231)

The Truong Son, Loei-Phetchabun, and Kontum Terranes in Indochina: Provenance, Rifting, and Collisions

Frontiers in Earth Science, 2021
The three main regions of Indochina are defined as the Truong Son, Loei-Phetchabun, and Kontum terranes. The aim of this review is to integrate numerous petrological studies with sedimentary, palaeontological, and provenance studies in order to construct
Clive Burrett, Mongkol Udchachon, Mongkol Udchachon, Hathaithip Thassanapak   +3 more
doaj   +1 more source

Evaporites and the salinity of the ocean during the Phanerozoic: Implications for climate, ocean circulation and life [PDF]

, 2005
A compilation of data on volumes and masses of evaporite deposits is used as the basis for reconstruction of the salinity of the ocean in the past.
Balukhovsky, A. N., Flögel, Sascha, Hay, William W., Migdisov, A., Söding, Emanuel, Wold, C. N.   +5 more
core   +1 more source

The Accumulation Characteristics of the Paleozoic Reservoir in the Central-Southern Ordos Basin Recorded by Organic Inclusions

Geofluids, 2021
The Permian tight clastic reservoir and Ordovician carbonate reservoir were developed in the central-southern Ordos Basin. This study investigated the fluid inclusion petrography, diagenetic fluid characteristics, formation process of natural gas ...
Ruijing Zhu, Rongxi Li, Xiaoli Wu, Xiaoli Qin, Bangsheng Zhao, Futian Liu, Di Zhao   +6 more
doaj   +1 more source

Five new malformed trilobites from Cambrian and Ordovician deposits from the Natural History Museum [PDF]

PeerJ, 2023
Injured trilobites present insight into how a completely extinct group of arthropods responded to traumatic experiences, such as failed predation and moulting complications.
Russell D.C. Bicknell, Patrick M. Smith
doaj   +2 more sources

Clay mineralogy, chemistry, and diagenesis of late devonian K-bentonite occurrences in northwestern Turkey [PDF]

, 2015
Thin beds of tephra (K-bentonites) formed by the diagenesis of volcanic ash are exposed within the limestone-dolomitic limestone successions of the Yilanli formation at Zonguldak and Bartin in northwestern Turkey.
Bozkaya, Ömer, Göncüoğlu, M.C., Günal-Türkmenoğlu, A., Okuyucu, C., Yilmaz, İ.Ö., Ünlüce, Ö.   +5 more
core   +1 more source

Earliest Triassic microbialites in the South China Block and other areas; controls on their growth and distribution [PDF]

, 2007
Earliest Triassic microbialites (ETMs) and inorganic carbonate crystal fans formed after the end-Permian mass extinction (ca. 251.4 Ma) within the basal Triassic Hindeodus parvus conodont zone.
A Baud, A Baud, A Sandler, AD Woods, Alan Reynolds, AME Winguth, B Beauchamp, C Armella, CB Foster, D Chen, DH Erwin, DJ Lehrmann, DJ Lehrmann, DL Kidder, DL Lehrmann, E Garzanti, E Heydari, ES Krull, G Ryskin, H Sano, H Yang, J Haas, J Payne, J Tong, JJ Dravis, JJ Sepkoski Jr, JK Schubert, JM Kennard, JP Grotzinger, JT Kiehl, K Grice, K Grice, K Hips, K Kaiho, K Perch-Nielsen, L Krystyn, Li Guo, LR Kump, M Calner, MA Sephton, ME Brookfield, ML Fraiser, MR Saltzman, MT Whalen, N Sheldon, O Weidlich, P Sheehan, PB Wignall, PB Wignall, Pierre-Yves Collin, Qinglai Feng, R Riding, R Riding, R Riding, RA Berner, RF Dill, RJ Twitchett, RJ Twitchett, RK Goldhammer, RM Hotinski, S Crasquin-Soleau, S Crasquin-Soleau, S Kempe, S Kershaw, S Kershaw, S Kershaw, S Wang, SB Pruss, SH Bottrell, Steve Kershaw, Sylvie Crasquin-Soleau, W Wang, Xinan Mu, Y Ezaki, Y Isozaki, Y Kakuwa, Y Wang, Yue Li   +77 more
core   +2 more sources

Mercury spikes suggest volcanic driver of the Ordovician-Silurian mass extinction

Scientific Reports, 2017
The second largest Phanerozoic mass extinction occurred at the Ordovician-Silurian (O-S) boundary. However, unlike the other major mass extinction events, the driver for the O-S extinction remains uncertain.
Qing Gong, Xiangdong Wang, Laishi Zhao, Stephen E. Grasby, Zhong-Qiang Chen, Lei Zhang, Yang Li, Ling Cao, Zhihong Li   +8 more
doaj   +1 more source

Detrital-zircon geochronology and provenance of the Ocloyic synorogenic clastic wedge, and Ordovician accretion of the Argentine Precordillera terrane [PDF]

, 2015
The Precordillera terrane in northwestern Argentina is interpreted to be anexotic (Laurentian) continental fragment that was accreted to western Gondwanaduring the Ordovician. One prominent manifestation of the subductionand collision process is a Middle?
Astini, Ricardo Alfredo, McClelland, William C., Mueller, Paul A., Thomas, William A.   +3 more
core   +1 more source

First report of an aulaceratid stromatoporoid from the Ordovician of Baltica [PDF]

Estonian Journal of Earth Sciences
The aulaceratid stromatoporoids first appeared in the late Middle Ordovician and had achieved a worldwide distribution in tropical to subtropical shallow-marine environments by the Late Ordovician; however, their presence in Baltica has not been ...
Juwan Jeon, Ursula Toom
doaj   +1 more source

Geochemical Records Reveal Protracted and Differential Marine Redox Change Associated With Late Ordovician Climate and Mass Extinctions

AGU Advances, 2022
The Ordovician (Hirnantian; 445 Ma) hosts the second most severe mass extinction in Earth history, coinciding with Gondwanan glaciation and increased geochemical evidence for marine anoxia.
Nevin P. Kozik, Benjamin C. Gill, Jeremy D. Owens, Timothy W. Lyons, Seth A. Young   +4 more
doaj   +1 more source