Marker horizons (also referred to as chronohorizons, key beds or marker beds) are stratigraphic units of the same age and of such distinctive composition...

The horizons can sometimes be very prominent, such as visible changes in cliff sides, to extremely subtle chemical differences. Marker horizons are stratigraphic...

from similar ones in geology, horizon or marker horizon, but where these have natural causes, archaeological horizons are caused by humans. Most typically...

meet. Horizon or The Horizon may also refer to: Horizon (1932 film), a Soviet film The Horizon (film), a 1961 Soviet film Horizon (1971 film), a Hungarian...

the case on Trindade Island. Plastiglomerate could potentially form a marker horizon of human pollution on the geologic record. and may survive as future...

carbon-13 and strontium isotopes, can be used to correlate strata. Marker horizons are stratigraphic units of the same age and of such distinctive composition...

in human history. Since tephra from the Minoan eruption serves as a marker horizon in nearly all archaeological sites in the Eastern Mediterranean, its...

has been named the "Baegdusan-Tomakomai ash" (B-Tm) and is valuable marker horizon for correlating regional sedimentary archives in and around the Sea...

stratigraphic unit. These are not normally named, but may be in the case of a marker horizon. A member is a named lithologically distinct part of a formation. Not...

researchers may prefer to measure sediment accretion with marker horizon plots. Marker horizons consist of a mineral such as feldspar that is buried at...

Archaeological method of relative dating Geochronology Chronostratigraphy Marker horizon Thermochronology Stratigraphy Structural geology Unconformity Geologic...

The British Post Office scandal, also called the Horizon IT scandal, involved the Post Office pursuing thousands of innocent subpostmasters for apparent...

PMID 28276513. We expect the Pt anomaly to serve as a widely-distributed time marker horizon (datum) for identification and correlation of the onset of the YD climatic...

Nebraska, in the Midwestern United States. Its conspicuous "rim rock" marker horizon outcrop caps the bluffs overlooking the original buildings of Fort Riley...

which bear their own unique chemistry and character, as temporal marker horizons in archaeological and geological sites, is known as tephrochronology...

stratigraphy, the ejecta from the Caloris Basin also can be used as a marker horizon. This ejecta is recognizable to a distance of about one basin diameter...

Waikaremoana where it is 4 cm thick, making it useful as a mid-Holocene marker horizon. It has also been characterised from multiple sea bed cores off the...

source and dispersal of Mediterranean S1 tephra, an early Holocene marker horizon erupted at Mt. Erciyes (Turkey)". Quaternary Science Reviews. 249: 106606...

sequence. The exposure is the type locality of the Whitestone limestone, a marker horizon for Namurian stratigraphy. "Crag Gill : Reasons for SSSI status" (PDF)...

faults have been highlighted in black, with the green line showing a marker horizon. The photograph is of an extensional fault array on cliffs west of Clarke...

The Jindalee Operational Radar Network (JORN) is an over-the-horizon radar (OHR) network operated by the Royal Australian Air Force (RAAF) that can monitor...

2003). Stratigraphers and sedimentologists often use hardgrounds as marker horizons and as indicators of sedimentary hiatuses and flooding events (Fürsich...

; Moore, Charles J.; Jazvac, Kelly (2014-06-01). "An anthropogenic marker horizon in the future rock record". GSA Today: 4–8. doi:10.1130/GSAT-G198A.1...

the volcanic event has been independently dated, the tephra horizon will act as time marker. It is a variant of the basic geological technique of stratigraphy...

taken at the bottom of the Top Ashdown Pebble Bed. The base of this marker horizon marks the formational change to the Ashdown Formation. Despite its name...

New Horizons is an interplanetary space probe launched as a part of NASA's New Frontiers program. Engineered by the Johns Hopkins University Applied Physics...

three degrees above the Arctic Circle, the Sun does not rise above the horizon for 40 successive days in midwinter. The position of the Arctic Circle...

Wadhurst Clay Formation. The Top Ashdown Sandstone is the most persistent marker horizon in Early Cretaceous strata throughout the region. It comprises a fine...

important as the type locality of the Botany Limestone, a widespread marker horizon that is key to an understanding of the stratigraphy of the Namurian...

horizon in the lower parts of the Monte Christo Formation. This dolomite horizon is largely chert-free but contains five thin (<10 cm) chert marker horizons...