Foreland basin development in the Andes of central Colombia has been suggested to have started in the Late Cretaceous through tectonic loading of the Central Cordillera. Eastward migration of the Cenozoic orogenic front has also been inferred from the foreland basin record west of the Eastern Cordillera. However, farther east, limited data provided by foreland basin strata and the adjacent East...

We report on the development of a hybrid mirror realized by integrating an EUV-reflecting multilayer coating with a lamellar grating substrate. This hybrid mirror acts as an efficient Bragg reflector for extreme ultraviolet (EUV) radiation at a given wavelength while simultaneously providing spectral-selective suppression of the specular reflectance for unwanted longer-wavelength radiation due ...

Hydrocarbon potential evaluation is a high priority in oil/gas exploration which significantly influenced by methods and subjective cognition. With the aim of quantitatively establishing hydrocarbon generation expulsion (HGE) model source rocks, data-driven approach proposed based on abundant readily available Rock-Eval/total organic carbon content (TOC)/vitrinite reflectance (VRo) datasets. Th...

relative diffuse reflection measurements from the original and ground surfaces using a he-ne laser are reported. the intensity measurements for the metallic, transparent dielectric, matte plastic surfaces and colored papers are presented. our results indicate that among metallic surfaces tested, aluminum has the highest diffuse reflectance; while the original stainless steel surface shows the l...

Identification of fossil material under a microscope is the basis of micropalentology. Our task is to locate and count the pieces of inertinite and vitrinite in images of sieve sampled rock. The classical watershed algorithm oversegments the objects because of their irregular shapes. In this paper we propose a method for locating multiple objects in a black and white image while accounting for ...

The ever-increasing demand for oil and gas has driven its exploration in rather extreme conditions. In Lamu offshore, which is hitherto underexplored, most of the wells already drilled turned out dry save a few with hydrocarbon shows despite promising reservoir properties related geological structures. This, therefore, necessitated source rock evaluation study area to ascertain presence potenti...

The influence of coalification on coal structure evolution in middle ranked coals is significant for physical assessment coalbed methane (CBM) reservoirs, which provides insights the intrinsic connection between jump and pore heterogeneity. A total 26 middle-ranked were samples covering Liupanshui Coalfield Guizhou Province, Anhe Henan Huaibei Anhui Sanjiang Basin Heilongjiang Ordos Shaanxi Pro...

Ordos Basin is an important continental shale gas exploration site in China. The micropore structure of the reservoir great importance for evaluation. Taiyuan Formation lower Permian main interval this area. To examine nanometer pore structures reservoirs Lin-Xing area, Northern Shaanxi, microscopic characteristics were analyzed via nitrogen adsorption experiments. parameters, such as specific ...