As a rule all oil fields in East Siberia are confined to local heterogeneous lithologic substitution. These areas usually possess higher level of fracturing and besides of reflected waves generate scattered ones with rather high amplitude. Both regularly reflected and diffracted/scattered waves should be used in order to get the proper seismic image of reservoirs structure: reflected waves fix ...

Abstract. Crustal shear zones generate earthquakes, which are at present unpredictable, but advances in mechanistic understanding of the earthquake cycle offer hope for future forecasting. Studies fault zone architecture have potential to reveal controls on rupture, locking, and reloading that control temporal spatial patterns earthquakes. The Pofadder Shear Zone exposed Orange River South Afri...

The gold mineralization located in the southern Eastern Desert of Egypt mostly occurs characteristic geologic and structural settings. gold-bearing quartz veins alteration zones are confined to ductile shear between highly deformed ophiolitic blocks, sheared metavolcanics, gabbro-diorite rocks. present study attempts integrate multisensor remotely sensed data, analysis, field investigation unra...

Outcrops of columnar joints made solidified lava flows are often covered by semiordered polygonal cracks. The polygon diameters fairly uniform at each outcrop, but their shapes largely vary in the number sides and internal angles. Herein, we unveil that statistical variation shape follows an extreme value distribution class: Gumbel distribution. law was found to hold for different joints, regar...

A large data base consisting of 40,679 well locations and 196,687 lithologic records was created from Illinois, Indiana, and Wisconsin well construction records for wells drilled during the period 1980-1997. The purpose of the database is to provide information for mapping the surface, thickness, transmissivity and hydraulic conductivity of the Quaternary, Silurian/Devonian, and Cambrian/Ordovi...

Site U1317 (proposal Site PORC-3A) is located on the northwest shoulder of the Challenger Mound (51o 22.8 N, 11o 43.1W, in 781 to 815 m water depth). Scientific drilling of the Challenger Mound was the central objective of Expedition 307. Specific objectives of drilling Site U1317 were: • To establish whether the mound base is on a carbonate hardground of microbial origin and whether past geofl...

The Gorkha earthquake (magnitude 7.8) on 25 April 2015 and later aftershocks struck South Asia, killing ~9000 people and damaging a large region. Supported by a large campaign of responsive satellite data acquisitions over the earthquake disaster zone, our team undertook a satellite image survey of the earthquakes' induced geohazards in Nepal and China and an assessment of the geomorphic, tecto...