Results 11 to 20 of about 72,374 (285)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+11 more sources

Reptile-like physiology in Early Jurassic stem-mammals. [PDF]

open access: yesNat Commun, 2020
Abstract There is uncertainty regarding the timing and fossil species in which mammalian endothermy arose, with few studies of stem-mammals on key aspects of endothermy such as basal or maximum metabolic rates, or placing them in the context of living vertebrate metabolic ranges.
Newham E   +19 more
europepmc   +13 more sources

Sedimentary and Source-to-Sink Evolution of Intracontinental Basins: Implications for tectonic and Climate Evolution in the Late Mesozoic (Southern Junggar Basin, NW China)

open access: yesFrontiers in Earth Science, 2022
Sedimentary investigations, petrography, heavy mineral and conglomerate component analyses, and detrital zircon U-Pb geochronology were conducted to reconstruct the sedimentary and source-to-sink evolution of the Southern Junggar Basin, an ...
Xutong Guan   +4 more
doaj   +1 more source

Early Jurassic silicified woods from Carapace Nunatak, South Victoria Land, Antarctica [PDF]

open access: yesFossil Record, 2023
The Jurassic vegetation of Antarctica remains poorly known and, while there have been several reports of large fossil trees from that time period across the continent, detailed anatomical studies of their wood are extremely scarce.
Agathe Toumoulin   +3 more
doaj   +3 more sources

Chemical composition of biotite in the Gowd-e-Howz (Siah-Kuh) granitoid stock, Baft, Kerman: Evidence for tectonic setting and physicochemical conditions of magma emplacement and crystallization [PDF]

open access: yesعلوم زمین خوارزمی, 2023
The Early Jurassic (≈180 Ma) Gowd-e-Howz (Siah-Kuh) granitoid stock is located in the southern part of the Sanandaj-Sirjan metamorphic belt, southeast of Iran in Kerman Province.
Mahbubeh arabzadeh bani asadi   +4 more
doaj  

PALYNOLOGY EVIDENCES OF HITHERTO UNRECOGNISED JURASSIC SEDIMENTATION IN RAJMAHAL BASIN, INDIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2004
In Rajmahal Basin the Upper Gondwana (Mesozoic) sequences are represented by the Dubrajpur and Rajmahal Formations. Palynologically, the Dubrajpur Formation is shown to be a time transgressive unit spanning from Early Triassic to Early Cretaceous. Out of
ARCHANA TRIPATHI
doaj   +1 more source

Geology and Jurassic paleogeography of the Mt. Primo-Mt. Castel Santa Maria ridge and neighbouring areas (Northern Apennines, Italy) [PDF]

open access: yes, 2014
This paper presents the results of a geological mapping project across the Mt. Primo ridge and neighbouring areas (Umbria-Marche Domain – Northern Apennines), where a thick Meso-Cenozoic carbonate succession is exposed.
Fabbi, Simone
core   +2 more sources

Analysis of the Importance of Extension in Accounting for the Post-Carboniferous Subsidence of the North Sea Basin [PDF]

open access: yes, 1986
Post Carboniferous sedimentary deposition in the Central North Sea basins can be separated into three major periods: Permian, Triassic and mid-Jurassic through present.
Hellinger, Steven J.   +2 more
core   +1 more source

Provenance of the lower jurassic quartz-rich conglomerate in northwestern sichuan basin and its link with the pre-collisional unroofing history of the north longmen shan thrust belt, NE tibetan plateau margin

open access: yesFrontiers in Earth Science, 2022
The research on the pre-collisional tectonic evolution of basin-mountain system at the margin of Tibetan plateau provides insights into the upward and outward growth mechanism of the plateau in the Cenozoic. Lower Jurassic Baitianba Formation quartz-rich
Fan Lv   +8 more
doaj   +1 more source

Strontium isotopes in Early Jurassic seawater

open access: yesGeochimica et Cosmochimica Acta, 1994
Abstract The analysis of well-preserved, well-dated belemnites and oysters from the Jurassic of Great Britain has resulted in a well-constrained, detailed seawater strontium isotope curve for the Early Jurassic. The preservation of fossil low-Mg calcite was monitored using Mn, Fe, δ 13 C , and δ 18 O .
Jones, C, Jenkyns, H, Hesselbo, S
openaire   +1 more source

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