Regional-scale magnetic and gravity data have been enhanced to identify major structures and distinguish geophysical blocks in order to evaluate the distribution of major mineral deposits and prospects in Central Iran. Major structures and coherent magnetic blocks have been defined from magnetic data enhanced using a combination of upward continuation and edge enhancement filters. Broad-scale regional

The Salin Sub-basin, Myanmar, contains up to 15,000 metres of Cenozoic sediments, but their provenance remains ambiguous. Here, a multi-proxy provenance study that employed Raman Spectroscopy-assisted heavy mineral analysis, light mineral petrography, and U-Pb detrital zircon geochronology, is used to identify source areas and sediment pathways of nine samples from three formations of Eocene to Oligocene

Zircon U-Pb ages and Hf-isotopes, and whole-rock geochemical and Sr-Nd-Pb isotopic compositions of the Laojunshan granitoids in the North Qinling Terrane (NQT) are presented to discuss their petrogenesis. The Laojunshan granitoids were emplaced at ca. 120 Ma and contain a minor population of Neoproterozoic inherited zircons. They are monzogranite to porphyritic biotite granites, high-K calc-alkaline

The Jiyang Depression is a petroleum-rich basin in eastern China and has four petroleum sags: the Dongying, Zhanhua, Huimin and Chezhen Sags. However, the petroleum resources in the four sags differ greatly. We collected Rock-Eval pyrolysis and vitrinite reflectance (Ro) data for source rocks and the contents, group components and GC-MS data for soluble organic matter (SOM) to investigate the reasons

We present a morphotectonic study of the offshore northern Sumatra fore-arc high and fore-arc basin and an evolutionary model of the area based on high-resolution marine geophysical datasets. We show that the landward slope of the fore-arc high and the western edge of the Aceh fore-arc basin host a set of deeply-rooted, seaward-dipping backthrusts: main backthrust (MBT) and frontal backthrust (FBT)

Lower Jurassic carbonate-platform deposits in Timor-Leste have been subject to much controversy. The Perdido Group contains the Bahamian-type facies shallow-water limestone of the Lower Jurassic that had been mixed with an upper Oligocene–lowest Miocene carbonate unit in Audley-Charles's Cablac Limestone. Foraminiferal assemblages from five sites in the Perdido Group are used to confirm a Sinemurian–Pliensbachian

Mineral compositions provide key information on the petrogenesis and tectonic settings of granitoid rocks. These relationships are addressed in the present paper, which is focused on the Eocene Gapdan pluton, near Zahedan in eastern Iran. The pluton is part of a granitoid suite intruded into Late Cretaceous to Middle Eocene flysch of the Sistan suture zone. It is zoned, consisting of granodiorite in

Being a part of the petroliferous Linqing depression, the Dongpu Sag is located in the SW part of the Bohai Bay Basin, eastern China, and is rich in oil and gas. As new discoveries of conventional, structural, and stratigraphic plays of oil and gas have been gradually diminished in the sag, there is an urgent requirement to explore unconventional shale oil and gas, for which the effective source rocks

In the present study, we present a new Pn anisotropic tomographic model of the uppermost mantle underneath the South China Sea and surrounding areas through the inversion of 23,042 high-quality hand-picked Pn arrival-time data. Our model shows obvious lateral heterogeneities in velocity and anisotropy that are closely correlated to surface geological structure in the study region. High Pn velocity

The widespread lower Cambrian black shales reflect a significant anoxic event during a global transgression, recording synergistic changes in the marine environment and biological evolution. Extremely high Hg (714 to 6187 ppb, average is 3380 ppb) contents and Hg to total organic carbon ratios (Hg/TOC: 120 to 765 ppb/wt.%) were observed in the Danquan section of South China, suggesting that extensive

We develop three-dimensional finite element models incorporating a subducting India slab to investigate the dynamic mechanisms of postseismic deformation processes following the 2015 Mw 7.8 Gorkha earthquake based on nearly 5 years of GPS data in Nepal and southern Tibet. At first, we explore two simple models that consider viscoelastic relaxation and stress-driven afterslip as the individual mechanism

The n-alkanes content in the sedimentary sequence from Thale Noi, on the west coast of the Gulf of Thailand, was analyzed and used to reconstruct the past sea-level fluctuations. The results were further compared with those based on sediment characteristics, loss on ignition, grain size distribution, and pollen analysis from the same core to investigate the efficiency of n-alkanes as a paleoenvironmental

The Chang7 Member of the Upper Triassic Yanchang Formation in the Ordos Basin, North China, has received much attention in recent years due to its huge shale oil potential. However, few studies of the relationship between black shale and other lithofacies are available, and the origin of black shales in the parasequence is poorly understood. In this paper, we describe the detailed petrography of the

Most primary magmas evolve compositionally as either tholeiitic or calc-alkaline lava series. The most voluminous magmas are generated through decompression melting of the upper mantle beneath diverging tectonic plates and differentiate as tholeiitic lavas. Calc-alkaline lavas, on the other hand, consist mainly of the bulk of differentiating arc magmas generated through H2O-fluxed melting of the upper

Oligocene-Miocene sediments in the Taiwan region were accumulated in the NE passive-continental margin of the South China Sea. We utilized around ~200 boreholes and reflection seismic data to study the Oligo-Miocene sequence stratigraphic framework in the Taiwan region. Major sequence boundaries are used to map out various sediment isopach maps, enabling us to decipher dominant tectonic events during

Garnet amphibolite can provide crucial information on tectonic processes. Recent progresses on garnet amphibolite in the Longyou area of the Cathaysia Block, South China have attracted geologists’ wide concerns and discussions about the regional metamorphic history and geodynamic setting. The Longyou garnet amphibolite shows a prominent porphyroblastic texture involving garnet (~40 vol%), hornblende

Collision of the Arabian and Eurasian plates has resulted in uplift of the Turkish-Iranian Plateau, where debate continues over how post-collisional convergence is being converted to strain. The internal deformation models of the plateau have taken into account the distribution of deformation in the NW-trending Bitlis-Zagros Mountain Range (BZMR), the southern boundary of the collision. The western

The northeastern Tibetan Plateau (NETP) is located at the intersection between the Northern China Block, Southern China Block, and Tibetan Plateau, representing the frontier of the northeastward extrusion of the plateau. Data of gravimetry, aeromagnetic survey, and terrestrial heat flow are integrated to investigate the Moho depth, the Curie surface depth, and the thermal lithospheric thickness beneath

Labuan Island represents the emergent part of a north-eastward plunging anticline. The stratigraphic succession at Labuan is made up of four formations: the Crocker Formation, the Temburong Formation, the Setap shale Formation and the Belait Formation. The sedimentological aspects of the Labuan stratigraphic succession have been studied by several authors but the stratigraphic relationships between

Early Eocene rift basins sediments in western and northwestern India contain deposits including lignite. These rift basins were formed during the early stage of the India - Eurasia collision. The Sedimentary successions in the studied five lignite mines are stratigraphically similar. In these successions, there are two thick lignite units, called the lower and upper lignite units, separated by early