Results 61 to 70 of about 4,297 (251)

Stratigraphic Model of East Biak Based on Magnetotelluric Data

Journal of Mathematical and Fundamental Sciences, 2020
Biak Island is thought to have originated from the Australian Continental passive margin in the Mesozoic. This passive margin underwent tectonic collision to form the bedrock of Biak Island during the Paleogene.
Alviyanda Alviyanda, Gusti Muhammad Lucki Junursyah, Prihadi Sumintadireja   +2 more
doaj   +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

STRATIGRAPHY OF THE TETHYS HIMALAYA IN ZANSKAR, LADAKH INITIAL REPORT

Rivista Italiana di Paleontologia e Stratigrafia, 2020
The preliminary results of the 1984 Italian Geological Expedition to Zanskar are given as a general account of the stratigraphy of the Tethys Himalaya succession.
MAURIZIO GAETANI, RAFFAELE CASNEDI, ELISABETTA FOIS, EDUARDO GARZANTI, FLAVIO JADOUL, ALDA NICORA, ANDREA TINTORI   +6 more
doaj  

Seismic and sequence stratigraphy of Late Jurassic in Nasiriyah oil-field [PDF]

مجلة جامعة الانبار للعلوم الصرفة
The study scope has focused on the Late Jurassic Group: the three genetically related Najmah, Gotnia, and Sulaiy formations beneath an area of more than 40000 Km2 capitalizing on huge integrated 3-D, 2-D seismic and well data compiled with competent ...
Sabah Shejiri
doaj   +1 more source

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

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

Integrated astrochronology, sequence stratigraphy, and chronostratigraphy of a shallow marine sandy mudstone (Lower Jurassic, Redcar Mudstone Formation, Cleveland Basin, UK)

Sedimentologika
Cyclostratigraphy and sequence stratigraphy are cornerstone disciplines of modern sedimentary geology but are not commonly applied to the same study sections.
Alexander J. L. Hudson, Clemens V. Ullmann, Linda A. Hinnov, Kevin N. Page, Stephen P. Hesselbo   +4 more
doaj   +1 more source

STRATIGRAFIA SEQUENZIALE DELLA SUCCESSIONE OLIGO-MIOCENICA DELLE LANGHE, BACINO TERZIARIO LIGURE-PIEMONTESE

Rivista Italiana di Paleontologia e Stratigrafia, 2017
The Piedmont Tertiary Basin (PTB) is bounded southwards and westwards by the Western Alps, and northwards by the north-western end of the Apennines. It develops internally to a south-dipping suture zone, on a basement consisting of allochthonous alpine ...
ROMANO GELATI, MARIO GNACCOLINI, PAOLO FALLETTI, DONATA CATRULLO   +3 more
doaj   +1 more source

Application of the Wavelet Transform and INPEFA in Sequence Stratigraphy. [PDF]

ACS Omega, 2023
Li W, Zhang J, Xie J, Xia Y, He Y.
europepmc   +1 more source