Results 141 to 150 of about 276 (173)

Regional Characterization of the Hirnantian Glacial Paleo-Physiography and Stratigraphic Architecture

Middle East Oil, Gas and Geosciences Show (MEOS GEO)
The Late Ordovician marked one of Earth's most profound climatic transitions, culminating in the Hirnantian glaciation and the second-largest mass extinction in the Phanerozoic (Finlay et al., 2010). Glacial advance during this stage extended as far as ∼30°S (Trotter et al., 2008; Phol et al., 2016; Cocks & Torsvik, 2021), sculpting widespread ...
Stefano Patruno, Leticia Itzel Flores-Sánchez, Alessandro Lanfranchi, Christian Cesari   +3 more
openaire   +1 more source

Late Hirnantian Clastic Depositional Systems Using Sequence Stratigraphy and Chronostratigraphy

Abu Dhabi International Petroleum Exhibition & Conference, 2018
Abstract The Hoban and Baqaa Members are located between the glacial to early post-glacial Sarah Formation (Ordovician) and the Qalibah Formation (Silurian). They have been distinguished as separate stratigraphic units in few outcrops of northern Saudi Arabia based on palynological analyses, graptolites, shell fragments, and their ...
Saeed Alshahrani, Rainer Zuhlke
openaire   +1 more source

Katian prelude to the Hirnantian (Late Ordovician) mass extinction: a Baltic perspective

Geological Journal, 2011
AbstractThe diversity of several groups of Late Ordovician fossils in the Baltic is discussed and corresponding curves are presented. The curves are correlated with the latest δ13C trend and probable sea surface temperatures of the equatorial ocean in order to link biodiversity and environmental changes.
Dimitri Kaljo, Linda Hints, Olle Hints, Peep Männik, Tõnu Martma, Jaak Nõlvak   +5 more
openaire   +1 more source

Phosphorus cycling during the Hirnantian glaciation

Palaeogeography, Palaeoclimatology, Palaeoecology
Johann Müller, Michael M. Joachimski, Oliver Lehnert, Peep Männik, Yadong Sun   +4 more
openaire   +1 more source

THE HIRNANTIAN ISOTOPE CARBON EXCURSION (HICE) IN SOUTHERN NORWAY

Geological Society of America Abstracts with Programs, 2017
Mikael Calner, Hanna Calner, Oliver Lehnert   +2 more
openaire   +1 more source

A New Echinoderm Fauna From The Hirnantian Of Indiana

Geological Society of America Abstracts with Programs
Lincoln Shoemaker, Carlton Brett
openaire   +1 more source

Astronomical calibration of the Hirnantian Isotopic Carbon Excursion

Palaeogeography, Palaeoclimatology, Palaeoecology
Jiawen Ouyang, Qiang Fang, Huaichun Wu, Runjian Chu, Meinan Shi, Congcong Gai, Yangyang Zhong, Tianshui Yang, Haiyan Li   +8 more
openaire   +1 more source

Late Ordovician microphytoplankton in Southwest China: recording paleogeographic variations across the Hirnantian glaciation

Palaeoworld, 2023
Tenger Borjigin
exaly  

A LATE HIRNANTIAN FAUNA IN EROSIONAL REMNANT OF THE WHIPPOORWILL FORMATION IN SOUTHEASTERN INDIANA

Geological Society of America Abstracts with Programs, 2023
Cole Farnam, Carl Brett, Lincoln Shoemaker, Jisuo Jin, Robert Elias   +4 more
openaire   +1 more source

A freshwater palynological assemblage from the Hirnantian of Saudi Arabia

Review of Palaeobotany and Palynology
Paul Strother, Marco Vecoli, Christian Cesari, Charles H. Wellman   +3 more
openaire   +1 more source