2007-12-03 16:57:53 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Because chalk is only a marine deposit. Its beds of tiny phytoplankton fossils and other tiny things that make their coverings from calcium carbonate.
Presence of chalk = marine environment.
2007-12-03 18:02:14 · answer #1 · answered by Lady Geologist 7 · 0⤊ 0⤋
Besides the tons of clam shells and common shark teeth and vertebrae found in the chalk beds? The Niobrara Chalk of Kansas is mostly the remains of foraminifera, a tiny marine organism.
2007-12-04 01:06:29 · answer #2 · answered by Now and Then Comes a Thought 6 · 0⤊ 0⤋
Must be the big flush down of the big Ice Dam from the North pole in the past as I have watched the information in TV. It flooded the whole US when it broke loose from its towering height.
2007-12-04 01:06:06 · answer #3 · answered by wacky_racer 5 · 0⤊ 0⤋
confusing point. look into onto yahoo. that will will help!
2014-11-20 04:19:57 · answer #4 · answered by ? 3 · 0⤊ 0⤋