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Mainly abrupt changes in mineral layers or the fossils in them.

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What information does the geologic time scale provided and what are the major divisions of time?

The information the geologic scale provides is animals and fossils over time and periods. Major divisions of time is called eras.


What kind of scientists worked with geologists to develop the geologic time scale?

Paleontologists, stratigraphers, and geochronologists worked with geologists to develop the geologic time scale. Paleontologists study fossilized remains of ancient life forms, stratigraphers study rock layers and their relationships, and geochronologists use various dating techniques to determine the age of rocks and events in Earth's history.


How did geologists determine the division of the geologic time scale?

Geologists determined the division of the geologic time scale through the study of rock layers and the fossils contained within them. By examining the different types of fossils and their distribution in the rock record, geologists were able to identify distinct time periods based on changes in the Earth's environment and the evolution of life forms. This process of relative dating helped establish the framework for the geologic time scale.


What methods did geologists use when they first developed the time scale?

The methods the geologists used when they first developed the geologic time scale. Were studying rock layers and index fossils worldwide. By Patrick


Geologists have divided earths history in the manaeable units that are represented by the?

Geologists have divided Earth's history into manageable units called eons, eras, periods, and epochs. These divisions help scientists study and understand the Earth's geological and biological history over millions of years.


Which is not a major period of the geologic time scale?

Cenozoic is not a major period of the geologic time scale. The scale is broken down into eras. Cenozoic, Mesozoic and Paleozoic are all part of the Phanerozic era.


What are the basic divisions of the Geologic Time Scale from larger to small?

eras and periods


What divides the history Earth into time units that help geologists analyze the rock record?

Geologic Time scale


What kind of scientist work with geologists to develop the geologic time scale?

Biologists, Geochemists, Petrologists, Stratigraphers and Palaeontologists all work to develop the geologic time-scale. Note that Petrology, Stratigraphy and Geochemistry are specialised forms of science that fall under the more general heading of Geology. Palaeontology lies somewhere between Geology and Biology.


What kind of scientists worked with geologist's to develop the geologic time scale?

biologists


What kind of scientists worked with geologist to develop the geologist to develop the geologic time scale?

Paleontologists, stratigraphers, and geochronologists worked with geologists to develop the geologic time scale. Paleontologists studied fossil evidence, stratigraphers looked at the layers of rock formations, and geochronologists used radiometric dating techniques to determine the age of rocks and fossils.


What methods did geologist used when they first developed the geologic time scale?

The methods the geologists used when they first developed the geologic time scale. Were studying rock layers and index fossils worldwide. By Patrick