Paleozoic Era Overview

These flashcards cover key concepts and events from the Paleozoic Era, including continental formations, geological changes, and significant orogenies.

Laurentia covers nearly all of __, Greenland, Ireland, and Scotland.

North America

The Paleozoic era is characterized by its __ tectonic activity and the formation of major mountain ranges.

intense

Three major Paleozoic orogenies in the Appalachian region are the Taconic, Acadian, and __ orogenies.

Alleghanian

During the Cambrian period, Laurentia was nearly covered by __ epicontinental seas.

shallow

In the Grand Canyon region, the Lower Cambrian __ Sandstone unconformably overlies Precambrian rocks.

Tapeats

Unconformities in the geological record mark boundaries between __ and regressive sequences.

transgressive

The Queenston clastic wedge formed during the __ period and indicates significant erosion and sedimentation.

Upper Ordovician

The __ region has evidence of volcanic ash deposits from the Ordovician rocks throughout the eastern U.S.

Appalachian

Laurentia was located near the __ during the Cambrian period, resulting in warm waters.

equator

The Paleozoic rocks across the continental interior are generally __ to gently dipping and warped into various structures.

flat-lying