Results 11 to 20 of about 3,385 (255)

The barite record of the past seawater oxygen isotope composition [PDF]

Nature Communications
The oxygen isotope composition of seawater (δ18Oseawater) is shaped by high- and low-temperature rock-water interactions, reflecting Earth system’s dynamics and evolution.
Tao Han, Huiming Bao, Yongbo Peng, Zhitong Lu, Yunzhou Song   +4 more
doaj   +2 more sources

COASTAL CHANGE DETECTION ALONG THE FIRE ISLAND, US UNDER THE IMPACT OF HURRICANE SANDY BASED ON LIDAR DATA [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Coastal erosion occurring all over the world is a disastrous coastal geological phenomenon. It can be caused by many natural factors such as wind and waves.
Y. Zhou, Y. Zhou, S. Tian, H. Wang, C. Chang, C. Chang, Y. Gao, Y. Gao, B. Zhang, B. Zhang, X. Wang, X. Wang   +11 more
doaj   +1 more source

Study on Occurrence and Optionality of Vanadium in Bauxite-type Vanadium Deposits, Northern Sichuan.

Kuangchan zonghe liyong, 2022
Bauxite-type vanadium deposit in north sichuan is a newly discovered type of vanadium deposit. Through the study of process mineralogy and selectivity of vanadium, it is found that vanadium has two kinds of occurrence states: The main is an independent ...
Wei Duan, Jian Huang, Wenchun Tang, Fei Zhang, Longchang Li, Qiang Ran, Bo Hui, Jinzhong Yang   +7 more
doaj   +1 more source

A post-synthesis modification method of molecular sieve 13X for enriching hopanoids in petroleum

Petroleum Research, 2021
In this study, alkali/acid treatment and ion exchange post-synthesis modification methods to modify the pore diameter and structure of molecular sieve 13X (MS13X) were applied to obtain products, which could then be implemented to improve the enrichment ...
Yu Fang, Ling Huang, Yanhua Shuai, Bin Zhang, Honggang Nie, Jin Li, Caiyun Wei, Huajian Wang, Wenlong Zhang   +8 more
doaj   +1 more source

Spatial and Temporal Redox Heterogeneity Controlled by a Fe(II), Anoxic Upwelling System in the Early Mesoproterozoic Ocean

Geophysical Research Letters, 2023
The availability of oxygen and nutrients during the Mesoproterozoic (1.6–1.0 Ga) is thought to influence the rate of eukaryote evolution. The cause of the transition from low productivity in the upper Wumishan Formation to organic‐rich sediments in the ...
Mingze Ye, Shuichang Zhang, Yuntao Ye, Minghao Wu, Xiaomei Wang   +4 more
doaj   +1 more source

The geochemical characteristics, distribution of marine source rocks and gas exploration potential in the northwestern Sichuan Basin, China

Journal of Natural Gas Geoscience, 2021
In recent years, the northwestern part of the Sichuan Basin has become a popular location for natural gas exploration. However, up to this point, the geochemical characteristics and distribution of marine source rocks in this area have not been ...
Guoyi Hu, Fei He, Jingkui Mi, Yilin Yuan, Jinhao Guo   +4 more
doaj   +1 more source

A method for locating ore bodies by geochemical indexes of pegmatite-type lithium deposits in the Ke'eryin area, western Sichuan, China

Dizhi lixue xuebao, 2022
The Ke'eryin area in Sichuan province is one of the large rare metal ore concentration areas in the Songpan–Garze metallogenic belt. Numerous granite pegmatite dikes spread around the Ke'eryin mass.
TANG Wenchun, DUAN Wei, ZOU Lin, YANG Guibing, ZHANG Wei, XIONG Guan   +5 more
doaj   +1 more source

Analytical requirements in exploration geochemistry [PDF]

Pure and Applied Chemistry, 1977
Abstract
John S. Webb, Michael Thompson
openaire   +1 more source

Oil-Source Correlation in the Ordovician and Carboniferous Strata from the Southwestern Ordos Basin (China): Implications for a Multivariate Statistical Approach [PDF]

ACS Omega
Jinfei Shangguan, Kaiming Su, Junping Huang, Yanze Sun, Yaohui Xu, Jingyi Li   +5 more
doaj   +2 more sources

Kinetic simulation of hydrocarbon generation and its application to in-situ conversion of shale oil

Petroleum Exploration and Development, 2019
The kinetic parameters of hydrocarbon generation are determined through experimental simulation and mathematical calculation using four typical samples selected from the Cretaceous Nenjiang Formation in the northwest of Songliao Basin, Chang 7 Member of ...
Bin ZHANG, Cong YU, Jingwei CUI, Jingkui MI, Huadong LI, Fei HE   +5 more
doaj   +1 more source