Abstract Amplitude Versus Offset (AVO) analysis has been successfully applied in the hydrocarbon industry for more than three decades. This effective tool of joint seismic and well-log data processing enables to predict analyze fluid saturated porous geological formations. AVO methodology is based on anomalous behavior pre-stack reflected amplitudes observed from bearing rocks. However, potenti...

The Liaohe Group, which is a significant lithostratigraphic unit within the Paleoproterozoic Jiao-Liao-Ji Belt situated between Longgang and Liaonan-Nangrim blocks, comprises Langzishan, Li’eryu, Gaojiayu, Dashiqiao, Gaixian formations, are characterized mainly by clastic-rich sequence with an interlayered bimodal-volcanic sequence, carbonate-rich (meta-)pelite-rich sequence. Currently, tectoni...

• The changing nature of detrital signatures reflect provenance from evolving terranes. Sandstones over the Mesomediterranean plate final closure Tethyan realm. oceanic eastern and southern thrust accomodation Inner Zone Mediterranean chains. in clastic wedges Circum-Mediterranean orogenic systems relations different source rocks geo-puzzle terranes, including ophiolite bearing, uplifted contin...

In this paper, the depositional environment, age, and tectonic context of Sub-Himalayan Kuldana Formation are discussed in detail. To determine Formation’s setting, sedimentological, palaeontological, petrographic investigations have been conducted accordingly. The lithologically consists both siliciclastic carbonate rocks. Petrographically, sandstone is divided into litharenite feldspathic pet...

The evolutional process of palaeoceanic environment and its effect on the accumulation organic matter during Ordovician–Silurian transition in Lower Yangtze region has been overlooked compared to that Upper South China, although their paleogeographic settings were expected be discrepant. This paper documents marine depositional environment, paleoclimate, sediment supply changes, discusses roles...

The Earn Group of central Yukon records the transition from a passive to an active margin along western Laurentia in Late Devonian. Fine-grained clastic rocks and chert lower contain late Early Middle Devonian fossils were deposited offshelf environment. upper comprises mixture sandstone conglomerate, fine-grained siliciclastic rocks, widespread crystal lithic tuff. Zircons this succession are ...

Rock mass strength is recognized as an important control on landscape morphology and evolution. However, the controls rock in mountainous topography remain poorly characterized, part because remains challenging to quantify at spatial scales relevant geomorphology. Here we mechanical properties of masses using subsurface S-wave velocities, Schmidt hammer hardness values, Geological Strength Inde...

Speleological, stratigraphic, paleomagnetic and faunal data is presented for the Buffalo Cave fossil site in the Limpopo Province of South Africa. Speleothems and clastic deposits were sampled for paleomagnetic and mineral magnetic analysis from the northern part of the site, where stratigraphic relationships could be more easily defined and a magnetostratigraphy could therefore be developed fo...