Results 91 to 100 of about 2,095 (187)

Thermal History and Hydrocarbon Accumulation Stages in Majiagou Formation of Ordovician in the East-Central Ordos Basin

Energies
The marine carbonates in the Ordovician Majiagou Formation in the Ordos Basin have significant exploration potential. Research has focused on their thermal history and hydrocarbon accumulation stages, as these are essential for guiding the exploration ...
Hua Tao, Junping Cui, Fanfan Zhao, Zhanli Ren, Kai Qi, Hao Liu, Shihao Su   +6 more
doaj   +1 more source

Reconstructing the Climatic-Oceanic Environment and Exploring the Enrichment Mechanism of Organic Matter in the Black Shale across the Late Ordovician-Early Silurian Transition on the Upper Yangtze Platform Using Geochemical Proxies. [PDF]

ACS Omega, 2020
Wei Z, Wang Y, Wang G, Zhang T, He W, Ma X.   +5 more
europepmc   +1 more source

Late Middle to Late Ordovician Phosphate Accumulation of the Moyero River Section (Siberia): A Record of Upwelling and Global Cooling

Russian Journal of Earth Sciences
The phosphate-bearing rocks (phosphate rocks and phosphorites) were studied over a 45-meter interval of the Moyero river section, covering the upper part of the Darriwilian and the lower part of the Sandbian stages of the Ordovician.
Lykov Nikita Andreevich, Rostovtseva Yu., Dronov Andrey   +2 more
doaj   +1 more source

BOUNDARY BETWEEN THE TIMANIAN AND URALIAN TECTONIC CYCLES: RESULTS OF DATING OF DETRITAL ZIRCONS FROM BASAL HORIZONS OF THE LOWER PALEOZOIC SYNRIFT COMPLEX OF THE POLAR URALS, AND IGNEOUS ROCK AGE DATA REPORT

Геодинамика и тектонофизика
The Upper Cambrian-Lower Ordovician terrigenous strata, unconformably overlying the Upper Riphean-Vendian rocks of the Timanide orogen in the north of the Urals, and contemporaneous bimodal volcanics and intrusive rocks are considered complexes marking ...
A. A. Soboleva, N. Yu. Nikulova, V. B. Khubanov   +2 more
doaj   +1 more source

Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions. [PDF]

Proc Natl Acad Sci U S A, 2019
Rasmussen CMØ, Kröger B, Nielsen ML, Colmenar J.   +3 more
europepmc   +1 more source

Late Ordovician Extinction in the Graptoloidea

, 1991
M J Melchin, C E Mitchell
openaire   +1 more source

A common arthropod from the Late Ordovician Big Hill Lagerstätte (Michigan) reveals an unexpected ecological diversity within Chasmataspidida. [PDF]

BMC Evol Biol, 2019
Lamsdell JC, Gunderson GO, Meyer RC.
europepmc   +1 more source

Mercury Spikes Indicate a Volcanic Trigger for the Late Ordovician Mass Extinction Event: An Example from a Deep Shelf of the Peri-Baltic Region. [PDF]

Sci Rep, 2019
Smolarek-Lach J, Marynowski L, Trela W, Wignall PB.   +3 more
europepmc   +1 more source

Tempo of the Late Ordovician mass extinction controlled by the rate of climate change. [PDF]

Sci Adv
Zhang Z, Yang C, Sahy D, Zhan RB, Wu RC, Li Y, Deng Y, Huang B, Condon DJ, Rong J, Li XH.   +10 more
europepmc   +1 more source

Identifying the most surprising victims of mass extinction events: an example using Late Ordovician brachiopods. [PDF]

Biol Lett, 2017
Finnegan S, Rasmussen CMØ, Harper DAT.
europepmc   +1 more source