Rock Correlation and Index Fossils

This is a surface where the rock has eroded away, producing a break, or gap, in the rock record.

• unfonformity

• inconsistancy

• uniformity

• correlation

Tags

NGSS.MS-ESS1-4

The fossils of organisms that were widely distributed but only lived during a short period of time are called 

• index fossils

• trace fossils

• petrified fossils

Tags

NGSS.MS-LS4-1

The oldest rock layer in an undisturbed rock sequence occurs ____.

• at the bottom of a sequence

• below the sedimentary rock layer

• at the top of a sequence

• below the unconformity

Tags

NGSS.MS-ESS1-4

Index fossils help determine relative age through correlating rock layers.

• True
• False

Tags

NGSS.MS-ESS1-4

A gap in the sequence of sedimentary rock layers caused by erosion.

• Inclusion

• Unconformity

• Cross-cutting

• Isotope

_{Which rock layer contains the newest fossils?}

• F
• E
• B
• C

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

A gap in the sequence of sedimentary rock layers caused by erosion.

• Inclusion

• Unconformity

• Cross-cutting

• Isotope

Tags

NGSS.MS-ESS1-4

This is when geologists match rocks and fossils from separate locations.

• correlation

• key beds

• unconformity

• uniformity

Tags

NGSS.MS-ESS2-3

What does the unconformity (buried erosional surface) at

line XY represent?

• faulting has occurred

• folding has occurred

• a time gap in the rock record of the area

• an area of contact metamorphism

Tags

NGSS.MS-ESS1-4

Fossil remains of a trilobite are most likely to be found in which type of rock?

• igneous
• volcanic
• sedimentary
• metamorphic

Tags

NGSS.MS-LS4-1