asbogstudy3

A thrust fault that dies out in the subsurface as it loses slip and stratigraphic separation

A low angle normal fault or low angle thrust fault

A fault in which the movement is parallel to the dip of the fault plane, such as a normal, reverse, or listric fault

The block that underlies a non-vertical fautl

A group of fossils that occur at the same stratigraphic level

A fault that forms contemporaneously with depsoition in sedimentary rock

The block that overlies a non-vertical fault

The amount of horizontal displacement on a fault

A fossil that identifies and dates the starat in which it is found

A well-defined, easily identified starta that is distinctive enough to be useful in coreelation in mapping

A fault with a curved fault plane. nea the surface the fault plane is steeply dipping, but it becomes progressively flatter with depth

The distance between tow formerly adjacent points on either side of the fault

A dip-slip fault in which the hanging wall has moved down relative to the footwall

A fault in which movement is not parallel to the strike or dip of the fault plane

The horizontal component of displacement measured perpendicular to the strike of the disrupted unit

A dip-slip fault in which the hanging wall has moved up relative to the footwall. The dip of the fault is between 45 and 90 degrees

The outcrop pattern of a formation as it crosses a valley forms a V shape. The V points in the direction that the formation underlies the valley

The horizontal distance between the stratigraphic unit offset by a fault, measured along the strike of the fault

A fualt in which the movement is parallel to the strike of the fault plane

The amount of vertical displacement on a fault, also the vertical component of net slip

A reverse fault in whihch the fault plane dips less than 45 degrees

The place where a geologic feature was first recognized and described

The orginially described strata that constitutes a stratigraphic unit to which other parts of the unit may be compared

A gap in the geologic record; an interruption in the depositional sequence that implies uplift and erosion have removed par of the geologic record or non-deposition has occured

The oldest layer is on the bottom and the younges layer is on the top; beds become younger in the direction of dip

Assumes that the sequence of lyaers was deposited horizontally or nearly so.

Distinguishable from other fossils, have lived during a short geologic time span, lived in different environments, be distributed in a wide geographic area and be abundant

starta are generally continuous unless eroded, interupted by fualting, truncated by an unconformity, shaped as a lenticular body, or deposited locally

Strata below the unconformity are cut off and are overlain at an angle by the beds above the unconformity

sedimentary deposits rest upon older igneous or metamorphy rocks

beds above and below an unconformity are parallel, but the unconformity is not parallel to the bedding

unconformity is parallel to the strata above and below it

V upstream parallel to topography

V upstream, outside topography

straight lines cutting across valley topography

V downstream

parallel lines along valley sides

V upstream inside topography

Concordant features (emplaced along zones of weakness)

discordant features (cutting across many lithologic units

The plates are moved apart by molten materail of the asthenosphere that is forced up into the crust between the plates; sea floor spreading

plates slide past each other

Plates collide or converge at a subduction zone