Results 71 to 80 of about 264,999 (349)

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

A Siklósbodony Sb-1 mélyfúrás feltételezett karbon-perm határképződményeinek ásványtani, kőzettani és geokémiai jellemzői | Mineralogical, petrographic and geochemical characteristics of siliciclastic rocks from the supposed Carboniferous–Permian boundary in borehole Siklósbodony Sb–1, south-western Hungary [PDF]

, 2004
A tanulmány a Siklósbodony Sb–1 fúrásban 700 m mélységben feltételezett karbon–perm határ közvetlen környezetéből származó törmelékes üledékes kőzetminták részletes ásványtani, kőzettani és geokémiai jellemzését mutatja be.
Szakmány, György, Raucsikné Varga, Andrea Beáta, Raucsik, Béla   +2 more
core   +1 more source

The Influence of Asymmetrical Formation from Makassar Basin to the Geochemical Characteristics of Mallawa Formation

JGEET: Journal of Geoscience, Engineering, Environment and Technology
A functional hydrocarbon system relies on three key elements: source rock, reservoir rock, and seal rock. These components are essential in assessing the hydrocarbon potential of a region. In South Sulawesi, the Makassar Basin shows promise for petroleum
Yarra Sutadiwiria, Imam Setiaji Ronoatmojo, Muhammad Taufiq Fathaddin, Rendy, Cahyaningratri Prima Riyandhani, Ariq Haykal Yusuf, Aufariq Asaria Cifa, Mordekhai, Yeftamikha, Amalia, Brahmantyo K.Gunawan   +10 more
doaj   +1 more source

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source

Hf contents and Zr/Hf ratios in granitic zircons

, 2010
We present a statistical analysis of 2201 electron microprobe determinations of Hf contents and Zr/Hf ratios in zircon from 65 samples of granitic rocks.
Wang, Xiang, Chen, J, Griffin, William Lindsay   +2 more
core   +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Evaluation and investigation technology of salt cavern resources in China

Shuiwen dizhi gongcheng dizhi
Under the background of the “carbon peaking and carbon neutrality goals”, the salt cavern is an important place for geological storage and carbon sequestration.
Zhenzhou LIN, Dongming LIU, Le ZHANG, Zhengzhong JIANG, Lei JING, Qingquan ZHI, Jie ZHANG, Yuejun ZHOU, Dingyu JIA, Yi YANG, Mingxing LIANG, Yang LI, Yang OU, Jinghong ZHAI   +13 more
doaj   +1 more source

Preparation of Seven Certified Reference Materials for Floodplain Sediments

Yankuang ceshi, 2018
BACKGROUND Floodplain sediment, which is an important sampling media for geochemical mapping, can represent the average distribution of elements in the basins and has universal applicability. At present, there is no floodplain sediment reference material
LIU Mei, GU Tie-xin, PAN Han-jiang, SUN Bin-bin, HUANG Hong-ku, YANG Rong, YAN Wei-dong   +6 more
doaj   +1 more source

Miocene to Quaternary Tectonostratigraphic Evolution of the Northern Section of the Burdur‐Fethiye Shear Zone, South‐Western Türkiye

Geological Journal, EarlyView.
New zircon ages reveal that lacustrine sedimentation initiated in the Late Miocene (Messinian), revising earlier Pliocene age assignments. The study results support the interpretation of the northern BFSZ as a broad left‐lateral transtensional shear zone rather than a discrete sinistral fault or simple extensional graben array.
İrem Elitez, Gürsel Sunal, Cenk Yaltırak, İsak Yılmaz   +3 more
wiley   +1 more source

Spatial distributions and the main driving factors of soil total nitrogen in Zhejiang Province, China

Geoderma
Nitrogen is an indispensable element in the growth and development stages of various crops, as well as an important component of soil nutrients. It plays an important role in farmland ecosystems.
Mi Tian, Binbin Sun, Chao Wu, Xiaomeng Cheng, Guohua Zhou, Chunlei Huang, Yining Zhou, Qinghai Hu, Longxue Li   +8 more
doaj   +1 more source