Explanation: Tool marks are basically grooves left behind by objects that are dragged along the stream bed. The average direction of these grooves can …
Tag Archive: stratigraphy
Jan
10
Permanent link to this article: http://geologybuzz.com/tool-casts
Jan
09
Terrigenous Sandstones
Average Sandstone Composition a) Orthoclase (alkaloid feldspars) b) Microcline (alkaloid feldspars) c) Plagioclase Rock Fragments- 15% a) MRF’s- Metamorphic Rock Fragments (Ex. schist, phyllite) b) SRF’s - Sedimentary …
Permanent link to this article: http://geologybuzz.com/terrigenous-sandstones
Jan
09
Oncolites
Explanation: These are composed of oncoids (spherical growth structures) created through the growth of cyanobacteria. The difference between oncolites and stromatolites is that oncolites …
Permanent link to this article: http://geologybuzz.com/oncolites
Jan
04
Ripple Marks
All ripple marks have an asymmetrical profile but with a steeper down current slope than up current slope. Here is an explanation …
Permanent link to this article: http://geologybuzz.com/ripple-marks
Nov
18
Do You Want to learn more about Grand Canyon National Park, The Colorado River, Or The Colorado Plateau???
Grand Canyon National Park And The Loss Of Sand Bars Along The Colorado River Abstract The purpose of this paper …
Permanent link to this article: http://geologybuzz.com/1048