You searched for: “geologic
geological, geologic
1. Referring to the history and structure of the solid portion (rocks, soils, and minerals) of the earth.
2. Descriptive of, or pertaining to, geology or the science of the earth.

A science which deals with the history of the earth and its life; especially, as recorded in rocks.

This entry is located in the following unit: geo-, ge- + (page 13)
Word Entries containing the term: “geologic
geological age, geologic age
1. Any great time period in the earth's history marked by special phases of physical conditions or organic development.
2. A formal geologic unit of time which corresponds to a stage.
3. An informal geologic time unit that corresponds to any stratigraphic unit.
4. The fourth-order division of geologic time, which establishes the limits or boundaries of by very minor changes; usually, in sea level and/or climate or in the biota, and usually local.

This is limited to a single continent or a part of it.

geological assurance, geologic assurance
The relative degree of certainty with which the existence, abundance, and quantity of a given resource can be determined; such as, coal or oil.
This entry is located in the following unit: geo-, ge- + (page 12)
geological chronology, geologic chronology
Specifically, the dating of archaeological data in association with a geological deposit or formation; such as, the dating of Pleistocene human remains in the context of glacial advances and retreats.
This entry is located in the following units: chrono-, chron- (page 7) geo-, ge- + (page 12)
geological erosion, geologic erosion; normal erosion
Erosion which is caused by prevailing agencies of the natural environment; including, running water, rain, wind, waves, and organic weathering.

Such erosion is primarily responsible for the present modifications of the land surfaces.

geological horizon, geologic horizon
1. A layer of rock with a particular composition; especially, of fossils, used for dating the stratum.
2. A specific layer, or stratum, of soil or subsoil in a vertical cross section of land.
3. A term used to describe an artifact, art style, or other such cultural trait which has extensive geographical distribution but a limited time span.
4. A thin bed or surface within a sedimentary sequence which represents a particular portion of geologic time and that is characterized by its distinctive fossil content or lithology.
geological log, geologic log
A graphic presentation of the lithologic or stratigraphic units or both traversed by a borehole.

Used in petroleum and mining engineering as well as geological surveys.

geological map, geologic map
1. A map on which geological information; such as, distribution, composition, and occurrences of bedrock, is recorded for a geographical region.
2. The representation of geological surfaces or subsurface features by means of signs and symbols and with indicated means of orientation.

It includes nature and distribution of rock units, and the occurrence of structural features, mineral deposits, and fossil localities.

geological province, geologic province
An extensive region that is characterized by a similar geological history, or by particular structural or physiographical features throughout; such as, a basin or a delta.
This entry is located in the following unit: geo-, ge- + (page 12)
geological storage, geologic storage; geological sequestration, geologic sequestration (s) (noun); geological storages, geologic storages; geological sequestrations, geologic sequestrations (pl)
The long-term accumulation of a substance; such as, carbon dioxide or radioactive waste, in a natural geologic formation; for example, a sedimentary basin, seabed, or underground cavern: Jack and the geologists were exploring the possibilities of having a geological sequestration in the mountains.

A major demonstration of carbon dioxide injection into a saline formation for sequestration is under way at an offshore gas platform in the North Sea near Norway. Results from this project (and others) suggest that such formations will be reliable, long-term geologic sequestration (storage) sites or carbon dioxide reservoirs.

There are numerous natural carbon dioxide reservoirs throughout the Rocky Mountain states of the United States in geologic "domes" and "traps", suggesting these geological storage formations will be excellent for keeping carbon dioxide captured from industrial facilities.

This entry is located in the following units: geo-, ge- + (page 12) sequest-, sequestr- (page 1)
geological thermometer, geologic thermometer
1. A mineral or aggregate of minerals the presence of which defines the temperature ranges or limits within which the minerals were formed.
2. A thermometer constructed to measure temperatures in boreholes to provide information about the temperature range within which minerals were developed.
geological time scale, geologic time scale
An arbitrary chronological arrangement of geological events; usually represented, in the form of a chart, showing the names of various rock layers and indicating the estimated period of each geological unit of geological time.
This entry is located in the following unit: geo-, ge- + (page 12)
geological time, geologic time
1. The period of time from the end of the formation of the earth as a separate planet to the beginning of written history, as recorded and illustrated by the succession of rocks.
2. The period of time that extends from the beginning of the world to the present day.
3. An interval of time occupied by the earth's geologic history, extending from about 3.9 billion years ago (corresponding to the age of the oldest known rocks) to the present day.

In other words, the part of the earth's history that is recorded in rock strata.

The geological time scale is classified in intervals distinguished by characteristic geological and biological features; as indicated by the following longest to the shortest durations: eon (one thousand million years), era (divided into several periods), period (unit of geological time during which a system of rocks is formed), and epoch (geologic time that is a subdivision of a period).

This entry is located in the following unit: geo-, ge- + (page 13)