Geological History of NYS

Front

During which geologic period did plants and animals first appear in land environments? Options: Cambrian, Ordovician, Silurian, Devonian

Back

Silurian

Front

Trilobite fossils were recently discovered in Himalayan Mountain bedrock. During which geologic period could these organisms have lived?

Back

Cambrian

Front

Oxygen in Earth's early atmosphere was first produced during the Precambrian from:

• cyanobacteria in Earth's oceans
• volcanic activity along plate boundaries
• the absorption of sunlight by plants
• evaporation of ocean water

Back

cyanobacteria in Earth's oceans

Front

Approximately 2.2 billion years ago, which gas was first added in large amounts to Earth's atmosphere from life-forms that evolved in the oceans? Options: carbon dioxide, water vapor, oxygen, nitrogen

Back

oxygen

Front

Which letter best represents the first appearance of humans on Earth? Options: A, B, C, D

Back

D

Front

Which sequence shows the correct order of Earth’s geologic time intervals from oldest to youngest? Options: Archean → Mesozoic → Cenozoic → Paleozoic → Proterozoic, Archean → Proterozoic → Paleozoic → Mesozoic → Cenozoic, Cenozoic → Mesozoic → Paleozoic → Proterozoic → Archean, Cenozoic → Paleozoic → Archean → Mesozoic → Proterozoic

Back

Archean → Proterozoic → Paleozoic → Mesozoic → Cenozoic

Front

Which event occurred earliest in geologic history?

• appearance of the earliest grasses
• appearance of the earliest birds
• the Grenville Orogeny
• the intrusion of the Palisades Sill

Back

the Grenville Orogeny

Front

Which New York State geologic event occurred most recently? Options: Taconian orogeny, Grenville orogeny, formation of the Catskill delta, dome-like uplift of the Adirondack region

Back

dome-like uplift of the Adirondack region

Front

Which rock unit is youngest in age? Options: A, B, C, D

Back

A

Front

What does rock layer B represent?

Back

An Intrusion