Discuss the suite of sedimentary rocks that forms on a passive margin with increasing distance and water depth from
the shoreline. What will be an ideal response?
Sandstone-carbonate-shale assemblages form on passive continental margins. Passive margin
deposits are rare or absent in Archean rocks, but they become common during the
Proterozoic and thereafter. Sandstones form close to shore, as a result of deposition, burial,
and cementation. Shales are deposited a bit further offshore and result from deposition of
suspended clay particles that float a greater distance from the shoreline.
You might also like to view...
The rock assemblage of _______-_______-_______ represents the formation of a _______
margin during continental rifting. Fill in the blank(s) with the appropriate word(s).
Sunspots are associated with the solar
A) core. B) corona. C) photosphere. D) chromosphere.
Extreme snowfall events, such as blizzards, may increase in intensity during the coming century
Indicate whether the statement is true or false
Why is it warmer in most of Europe than in northern California even though both are on the east side of an ocean and Europe is at higher latitude than California?
A) California weather is affected by the coastal mountains, which hold cold air along the west coast. B) Californians are just wimps; it really is warmer than Europe. C) California is affected by a cold offshore current, whereas Europe has the warm north Atlantic current, the continuation of the Gulf Stream. D) The famous California surf stirs up the surface water, bringing deeper colder ocean water to the surface.