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Sedimentary rocks cannot be given an absolute date by radiometric testing, but they can be given an estimated date from a few geological laws, for example if a bed of desert sandstone ins under a bed of limestone there is a law that says that the sandstone is older.

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Q: Sedimentary rocks can't be dated
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Related questions

Most sedimentary rocks are readily dated by radiometric methods True False?

False


Rocks formed from weathered debris from preexisisting rocks are called?

They are called clastic sedimentary rocks.


Are sedimentary rocks classified tofoliated sedimentary rocks?

Metamorphic rocks are classified by foliation or lack there of, not sedimentary rocks. They are classified into Clastic Sedimentary, and Chemical Sedimentary.


What is the name for Rocks formed when sediments are compacted and cemented together?

They are called sedimentary rocks. Sedimentary rock can't be dated using radioactive dating because it is composed of sediment, which is actually small pieces of different rocks. To date it, you have to use radioactive dating on the surrounding rocks.


Are sedimentary rocks formed from fragments of other rocks chemical sedimentary rocks?

No. The rocks you describe are clastic or detrital sedimentary rocks.


What has the author Sam Boggs written?

Sam Boggs has written: 'Petrology of sedimentary rocks' -- subject(s): Sedimentary Rocks 'Petrology of sedimentary rocks' -- subject(s): Rocks, Sedimentary, Sedimentary Rocks


Are there any fossils in sedimentary rocks?

Yes all fossils occur in sedimentary rocks or rocks that began as sedimentary rocks.


What rocks are formed when sediments are compressed compacted and cemented togerther?

Sedimentary rocks.


What rocks are formed from broken rocks?

Clastic sedimentary rocks and Cataclasites (a form of metamorphic rock) are formed from broken rocks.


Sedimentary rocks formed when they undergo?

Sedimentary rocks form when they undergo metamorphism. Only if they decide NOT to be Sedimentary rocks anymore.


What class of sedimentary rocks is made of fragments of rock minerals and shells?

== == Clastic sedimentary rocks.


What sedimentary rocks are made of fragments of rocks minerals and shells?

Bioclastic sedimentary rocks.