Field Outcrops In The Study Area A Thick Layered Gray Black Siliceous

Field Outcrops In The Study Area A Thick Layered Gray Black Siliceous Field outcrops in the study area (a) thick layered gray black siliceous rock. (b) thin layered gray black siliceous shale. (c)middle layered grayblack siliceous shale sandwiched with a limestone 2. (e) gray siltstone from the semi deep lake, the bottom of the outcrop xj. (f) gray mudstone interlayered shell debris from semi deep lake, the well kj3 (drilling cores). (g) medium to thick bedded, gray siltstone and fine sandstone with some thin layers of gray black shale from deep lake, the bottom of the outcrop zf.

Photographs Of The Field Outcrops And Drilling Cores In The Study Area Field outcrops in the study area (a) thick layered gray black siliceous rock. (b) thin layered gray black siliceous shale. (c)middle layered gray black siliceous shale sandwiched with a limestone 2.0 m × 0.8 m lens. (d) middle layered dark gray siliceous limestone. This study focuses on four upper devonian shale units in the northwestern part of the cab (fig. 1).the givetian frasnian olentangy shale is mostly gray shale, and the overlying famennian ohio shale is divided into three members (in ascending order): the huron shale member (mostly black shales), the chagrin shale member (mostly gray shales), and the cleveland shale member (mostly black shales. 2.1. structure background. the study area is located in the northwestern part of the southwestern margin of the upper yangtze block (figure figure1 1 a), and regionally in the right river basin at the eastern end of the paleo tethys tectonic belt during the devonian permian, a rift basin developed at the intersection of the tethys and the pacific coastal tectonic domains (figure figure1 1 d. The black island assemblage, which outcrops in the southwestern part of the study area, forms the most westerly exposures of the rice lake greenstone belt in manitoba (fig. gs 26 1, 2). together with the red lake greenstone belt of ontario, these uchi subprovince volcanic rocks are important hosts for lode gold mineralization. ermanovics and.