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The Late Tremadocian (Ordovician) Graptolite Kiaerograptus from Central Hunan, China: Taxonomy and Biostratigraphy

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (1)

Well-preserved graptolites of the genus Kiaerograptus are first reported from the upper Tremadocian Yinchupu Formation in the Nanba section, Yiyang, H......

Tectonics of the Solomon Sea Basin from Vertical Gravity Gradient and Seismic Data

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (2)

The Solomon Sea Basin is a Cenozoic back-arc spreading basin within the convergence system of the Pacific and Indo-Australian plates. Against the back......

Geochemical Characteristics of the Upper Permian Longtan Formation from Northeastern Sichuan Basin: Implications for the Depositional Environment and Organic Matter Enrichment

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (4)

A set of organic-rich shales of the upper Permian Longtan Formation, which is widely developed in the northeastern part of the Sichuan Basin, is a key......

Environmental Effects on Differential Organic Matter Enrichment of the Lower Cambrian Shale, Tarim Basin, NW China

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (5)

Early Cambrian shale is an important petroleum source rock around the world. Because of little drilling data and poor seismic data, until recently, or......

In Situ Rb-Sr Dates of Muscovite and Sulfur Isotope of Pyrite from the Yangshan Gold Deposit in Western Qinling, China

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (5)

Located along the southern part of the West Qinling orogenic belt, the Yangshan gold deposit is one of the largest in China. The major gold ores of Ya......

An Evaluation of Phase Behaviors of the Oil-Gas-Water System in the Displacement of Crude Oil with CO2

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (2)

CO2 dissolution into an aqueous phase and water evaporation into a gaseous phase takes place during CO2 injection into an oil reservoir. This study ai......

Research Progress on the Electrical Properties of Gas Hydrate-bearing Sediments

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (3)

Electrical properties are important physical parameters of natural gas hydrate, and, specifically, resistivity has been widely used in the quantitativ......

Reservoir Potential Assessment of the Tortonian-Calabrian Sediments from Offshore Makran (Southwest Pakistan) through a Multidisciplinary Approach

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (1)

The Tortonian-Calabrian strata of Offshore Makran (Pakistan) is investigated for the purpose of reservoir assessment. The stratigraphy and petrophysic......

Apatite Geochemical and Nd Isotopic Insights into Trachyte Petrogenesis in the Tianchi Volcanic Area of Changbai Mountain, NE China

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (6)

We report the oxide, element geochemistry and Nd isotopic geochemical data of apatite in the middle Pleistocene medium- and fine-grained trachyte in t......

Was the Panzhihua Large Fe-Ti Oxide Deposit, SW China, Formed by Silicate Immiscibility?

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (5)

The Panzhihua mafic intrusion, which hosts a world-class Fe-Ti-V ore deposit, is in the western Emeishan region, SW China. The formation age (similar ......

Structural Variation between the Western and Eastern Kuqa Fold-and-thrust Belt, China: Insights from Seismic Interpretation and Analog Modeling

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (4)

The Kuqa fold-and-thrust belt exhibits apparent structural variation in the western and eastern zone. Two salt layer act as effective decollements and......

Early Cretaceous Thrust and Nappe Tectonics in North Qilian Shan, Northern Tibetan Plateau: Evidence from Field Mapping, Geochronology, and Deep Structural Analysis

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (4)

The North Qilian Shan fold and thrust belt, located at the northern Tibetan Plateau and southern margin of the Hexi Corridor, is a key tectonic unit t......

Single-element Anomaly Mapping from Stream Sediment Geochemical Landscapes Aided by Digital Terrain Analysis

期刊: ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2023; 97 (1)

The identification of anomalies within stream sediment geochemical data is one of the fastest developing areas in mineral exploration. The various mea......

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