Results 101 to 110 of about 15,497 (264)

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

Geological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang, Khin Zaw, Kakda Kret, Ivan Belousov, Kotaro Yonezu, Koichiro Watanabe, Charles Makoundi   +6 more
wiley   +1 more source

The Jurassic of Denmark and Greenland: Triassic and Jurassic transtension along part of the Sorgenfrei–Tornquist Zone in the Danish Kattegat [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2003
In the Kattegat area, Denmark, the Sorgenfrei–Tornquist Zone, an old crustal weakness zone, was repeatedly reactivated during Triassic, Jurassic and Early Cretaceous times with dextral transtensional movements along the major boundary faults.
Korstgård, John a., Mogensen, Tommy Egebjerg   +1 more
doaj  

First discovery of actinopterygian cutting-edged teeth from the middle Norian (Late Triassic) at the Tulong section, southern Tibet, China [PDF]

PeerJ
Actinopterygians (ray-finned fishes) successfully passed through the Permian-Triassic Mass Extinction (PTME) and flourished in the Triassic with diverse feeding specializations and occupation of various trophic levels.
Zichen Fang, Long Cheng, Haishui Jiang, Xianlang Wu, Xulong Lai, James G. Ogg   +5 more
doaj   +2 more sources

Coping between crises: Early Triassic–early Jurassic bivalve diversity dynamics

Palaeogeography, Palaeoclimatology, Palaeoecology, 2011
Abstract The Triassic is bounded by two of the most severe biotic crises, but nevertheless this time was, for bivalves, both a recovery and a diversification period, and a moment to fully exploit some of their evolutionary novelties. Just how and when this was achieved is analyzed in this paper, which covers Induan to Sinemurian bivalve diversity ...
Ros, Sonia, De Renzi, Miquel, Damborenea, Susana Ester, Márquez Aliaga, Ana   +3 more
openaire   +2 more sources

Sedimentology and geochemistry of the upper Triassic mercia mudstone group and marginal deposits, southwest Britain [PDF]

, 1989
Not ...
Leslie, Alick Bruce
core  

Triassic ammonoid biostratigraphy: an overview

, 2010
The Triassic chronostratigraphic scale was built on two centuries of research on ammonoid biostratigraphy and biochronology. Two Triassic stage bases and all of the Triassic substages are currently defined by ammonoid bioevents.
S. G. Lucas, Spencer G. Lucas, Justin A. Spielmann, J. F. Jenks, James F. Jenks, Marco Balini, J. A. Spielmann, M. Balini   +7 more
core   +1 more source

Late Pleistocene Volcanic Rocks From Tengchong Volcanic Field at SE Tibetan Plateau: Constraints on Petrogenesis and Mantle and Crustal Processes

Geological Journal, EarlyView.
Early zircon saturation and crystallisation occur in mafic (52–54 wt.% SiO2) lavas at Tengchong volcanic field. These early formed zircons with high δ18O (6.6‰–7.9‰) indicates mantle enrichment by subducted supracrustal materials. ABSTRACT Late Pleistocene (< 0.2 Ma) mafic and evolved volcanic rocks occur in northern Tengchong Volcanic Field, SE ...
Lizhu Wang, Haibo Zou
wiley   +1 more source

Sedimentology, sandstone provenance and palaeodrainage on the eastern Rockall Basin margin : evidence from the Pb isotopic composition of detrital K-feldspar

, 2010
The Rockall Basin, west of Ireland, is a frontier area for hydrocarbon exploration but currently the age and location of sand fairways through the basin are poorly known.
Daly, J. Stephen, J. S. Daly, Tyrrell, Shane, Souders, A. Kate, Haughton, Peter D. W., Shannon, Patrick M., P. D. W. Haughton, S. Tyrrell, A. K. Souders, P. M. Shannon   +9 more
core   +1 more source

Tectono‐Sedimentary Evolution of the Neogene İnegöl Basin (NW Anatolia): Constraints on Transtensional Basin Development at the Junction of the Western Anatolian Extensional Province and the North Anatolian Fault Zone

Geological Journal, EarlyView.
The study outlines the tectono‐sedimentary evolution of the İnegöl Basin in north‐western Anatolia. Basin formation was controlled by interacting extensional and strike‐slip fault systems linked to uplift of the Uludağ Massif. Terrestrial sedimentation from the Miocene to Pleistocene is reconstructed using abundant fossil mammal assemblages that ...
M. Cihat Alçiçek, Volkan Karabacak, Serdar Mayda   +2 more
wiley   +1 more source

The early evolution of rhynchosaurs

Frontiers in Ecology and Evolution, 2016
The rhynchosaurian archosauromorphs are an important and diverse group of fossil tetrapods that first appeared during the Early Triassic and probably became extinct during the early Late Triassic (early Norian).
Martin Daniel Ezcurra, Martin Daniel Ezcurra, Felipe eMontefeltro, Richard J Butler   +3 more
doaj   +1 more source