137k views
1 vote
A geologist finds a layer of rock with marine invertebrate fossils and

below that a layer with only land dwelling animal fossils which does
this most likely indicate about artys past in this area?

2 Answers

6 votes

Answer:

there used to be an ocean there

Step-by-step explanation:

User SubGothius
by
8.2k points
4 votes

Answer:The nuclear decay of radioactive isotopes is a process that behaves in a clock-like fashion and is thus a useful tool for determining the absolute age of rocks. Radioactive decay is the process by which a “parent” isotope changes into a “daughter” isotope.

Explanation:Together with stratigraphic principles, radiometric dating methods are used in geochronology to establish the geologic time scale. Among the best-known techniques are radiocarbon dating, potassium–argon dating and uranium–lead dating.

User Fittoburst
by
8.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.