Results 71 to 80 of about 3,284 (255)

Characteristics and evolutionary process of low-mature paleo-subsurface rivers in carbonate sequences and controls on hydrocarbon accumulation in the northern Tarim Basin, NW China

Frontiers in Earth Science
Paleo-subsurface rivers can serve as high-quality reservoir spaces for hydrocarbon accumulation within the carbonate sequence stratigraphy. However, the characteristics and evolutionary process of the typical low-mature paleo-subsurface rivers are rarely
Hongqi Dong, Hongqi Dong, Hongqi Dong, Bingshan Ma, Xiaoguo Wan, Jiapeng Liang, Jiapeng Liang, Bin Liang, Bin Liang, Qingyu Zhang, Qingyu Zhang, Meng Zhang, Meng Zhang, Guochen Mo, Guochen Mo   +14 more
doaj   +1 more source

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

Redefinition of the Ilerdian Stage (early Eocene)

Geologica Acta, 2009
The Ilerdian Stage was created by Hottinger and Schaub in 1960 to accommodate a significant phase in the evolution of larger foraminifera not recorded in the northern European basins, and has since been adopted by most researchers working on shallow ...
V. PUJALTE, J.I. BACETA CABALLERO, B. SCHMITZ, X. ORUE-ECHEBARRÍA, A. PAYROS AGIRRE, G. BERNAOLA BILBAO, E. APELLANIZ INGUNZA, F. CABALLERO SANTAMARIA, A. ROBADOR MORENO, J. SERRA KIEL, J. TOSQUELLA I ANGRILL   +10 more
doaj  

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

A four stage evolution of the White Channel gravel: Implications for stratigraphy and palaeoclimates [PDF]

, 2014
Although the White Channel gravel (WCG) of the Klondike district, Yukon, contains gold placers\ud which have been exploited for over a century, few sedimentological studies have been undertaken.\ud This study reports a four stage evolution of the WCG, comprising:\ud i.
Lowther, Robert, Peakall, Jeff, Chapman, Robert, Pound, Matthew   +3 more
openaire  

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +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

Sedimentary and Tectonic, Implications on Late Cretaceous Reservoir Succession Along the Oil Fields, Mosul Block, Northwestern Iraq

Iraqi Geological Journal
This study focuses on Cretaceous reservoir succession development and evaluated in the Mosul Block NW Iraq. The oil fields are Sufayia, Ain Zalah, and Tel-Hajer (Sufayia-1, Ain Zalah-29, producing fields and Exploration well Tel-Hajar-1 South of
Aboosh Al-Hadidy, Doaa Fadhil, Mustafa Theyab   +2 more
doaj   +1 more source

Hydrologic Evolution of a Carbonate Aquifer (Dinaric Karst, Croatia)

Geologia Croatica, 2010
Dinaric Karst terrains contain specific, lam inatedspeleothems, which line all surfaces of subterraneanvoids including Cretaceous bedrock limestone, and oldervadose speleothems and clastic sediments.
Ljubomir Babić, Damir Lacković, Nada Horvatinčić   +2 more
doaj   +1 more source

Local Structures of Se and Br in Cretaceous–Paleogene Boundary Sediments and Concentration Effects of Ferrihydrite Originating From Impact Ejecta

Geological Journal, EarlyView.
Chemical states of Se and Br atoms in the KPg boundary sediments from Stevns Klint were studied using XAFS spectroscopy. The high concentrations of Se4+ could become an index of the degree to which the global environment was soiled with dust and ash derived from impact ejecta or volcanic eruptions.
Kei‐ichiro Murai, Akira Yoshiasa, Ginga Kitahara, Makoto Tokuda, Satoko Ishimaru, Toshihiro Moriga   +5 more
wiley   +1 more source