Sedimentary Rocks.docx

6 Pages

Earth Sciences
Course Code
Earth Sciences 1022A/B
Stephen R Hicock

This preview shows pages 1 and half of page 2. Sign up to view the full 6 pages of the document.
Sedimentary Rocks For sed rocks I could ask for environment of deposition, name a mineral in it, texture, or name the rock. Sedimentary Environments  Alluvial Fans: stream deposits near the base of mountains; usually poorly sorted and angular (breccia, arkose)  Fluvial Environment: river deposits of well sorted, rounded sediments (sandstone, shale)  Eolian Environment: wind deposits which are well rounded, very well sorted, and normally cross-bedded (sandstone)  Glacial Environment: sediments are very poorly sorted with subangular to subrounded grains  Deltas: complex environment where thick accumulations of siltstone, sandstone, and shale may be deposited  Karst Environment: carbonates (calcite, dolomite) extracted from groundwater in limestone caves to form new carbonate deposits (travertine)  Restricted Basin: evaporites (rock salt, gypsum, potash)  Shoreline Environment: sediment deposited in beaches, bars, spits, lagoons are clean (well sorted; siltstone, sandstone, shale)  Organic Reefs: solid structures composed of shells and secretions of marine organisms (highly fossiliferous limestone)  Shallow Marine Environment: cyclic sequences including shale, sandstone, and limestone layers representing changes in sea level  Deep Ocean Environment: turbidity currents form fining upward, graded deposits of well sorted angular grains; also thick deposits of microscopic plankton skeletons accumulate as chalk Conglomerate -rounded rock fragments of any composition - Sandston
More Less
Unlock Document

Only pages 1 and half of page 2 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.