The integration of sedimentological and structural data in the western end of the Ripoll syncline allows a clearer understanding of the palaeogeography of the area between the oblique termination of the Pedraforca thrust sheet and the frontal Vallfogona thrust during middle Eocene times. In this region, a 2.5-km thick clastic succession corresponding to the Bellmunt and Milany sequences infille...

The Tarim and Junggar basins in central Asia are capped by a thick pile of conglomerates, called the Xiyu Formation, that are commonly linked to a change in climate and/or accelerated uplift near the Plio-Pleistocene boundary. In order to better understand their origin and significance, we carried out a combined structural and magnetostratigraphic study in the Quilitage syncline (southern Tians...

the rijab area with189 square kilometers is located in northwest of zagros and north of sarpol zahab city. its main skeleton is made of hard and resistive layers of shahbazan dolomite and asmari lime, that its eastern part is pressed as an anticlinorium form but its western part as a syncline form. as a result of kerend fault practice most of the tectonically activities are seen in middle parts...

Introduction: Most impact structures on Earth are modified by erosion. First order structural features of impact craters such as the crater diameter, the size of the central uplift, and ring syncline can be measured in field campaigns [e.g. 1] or by geophysical explorations [e.g. 2,3]. However, these quantities deviate from the original crater diameter or other morphological features of the pri...

In order to find out the enrichment mechanism and forming type of deep shale gas, taking Longmaxi Formation in Desheng–Yunjin Syncline area Sichuan Basin as an example, we determined mineralogy, organic geochemistry, physical property analysis, gas water content, influence three factors, namely sedimentation, structural conditions, hydrogeological on gas. The results show that is a good hydroca...

The Wufeng–Longmaxi Formation in northern Guizhou Province is the dominant shale gas exploration and development strata China. This study investigates Shixi Daozhen synclines, which are located basin margin transition zone. region experienced complex tectonic stages superimposed transformations, resulting heterogeneous preservation conditions reservoir pressure evolution different units of Form...

After the late Cryogenian glaciation the central region of Brazil was the site of extensive deposition of platformal carbonates of the Araras Group. This group includes a basal cap carbonate sequence succeeded by transgressive, deep platform deposits of bituminous lime mudstone and shale. Facies and stratigraphic data combined with carbon and oxygen isotopic analyses of the most complete sectio...

Abstract The 2200 m thick Cretaceous units of well Gänserndorf UeT3 have been biostratigraphically analyzed based on cuttings from 3210 to 5140 m. deposits the Tirolic Glinzendorf Syncline (a part buried Northern Calcareous Alps) can be largely correlated with Lower Gosau Subgroup Grünbach Syncline. An exception is basal unit, which has no equivalent in This lower unit subdivided into a non-mar...

The phenomenon of coalbed-methane synclinal accumulation in the Qinshui Basin has been widely reported, but it mainly observed core block Syncline. questions arise: does this exist wing Syncline and, if so, what is mechanism behind it? Further study required to answer these questions. This paper focuses on South Anze No. 3 coal seam as an example. It conducts a systematic sorting geological cha...