Deep sea marine environment

On the seafloor, in turbidites, the base of each sequence is usually composed of coarse materials, occasionally conglomerates. In this case, the conglomerates are generally very well sorted, well rounded and often with strong imbrication in the long axis of the clasts.

Shallow water marine environment

Conglomerates are present at the base of sequences established during marine transgressions above an unconformity "Unconformity (geology)") and are known as basal conglomerates. They represent the position of the coast at a particular time and are diachronic").

River

Conglomerates deposited in a fluvial environment are generally well rounded and well ordered. The clasts are transported as bed load and only at times of high flow. The size of clasts decreases as they are transported further due to weathering, so conglomerates are characteristic of immature river systems. In sediments deposited by mature rivers, conglomerates are generally bounded at the base of a channel fill where it is known as pebble laps. Conglomerates deposited in a fluvial environment often have AB planar type imbrication.[18]​.

Alluvial

Fanglomerates are poorly sorted, matrix-rich conglomerates that originated as debris flows on alluvial fans and probably contain the largest accumulations of gravel in the geological record.[19]​.

Glacier

Glaciers transport much coarse-grained material and many glacial deposits are conglomeradic. Tillites, sediments deposited directly by a glacier, are typically poorly ordered, matrix-supported conglomerates. The matrix is ​​usually fine-grained, made up of finely ground rock fragments. Aquifer deposits associated with glaciers are usually conglomeratic and form structures such as eskers.[20]​.

Conglomerates originated from till are called tillite.[21]​.

The geoforms modeled in conglomerate are diverse. In general, the shapes modeled in conglomerate resemble those seen in sandstone.[22]​ This situation would occur because both rocks decompose and erode through the disintegration of grains or clasts.[22]​ On a large scale, conglomerates can constitute slopes, badlands, dissected plateaus, domed hills "Dome (geology)") and stepped slopes.[22]​ Some conglomerate landscapes have become covered as part of World Heritage Sites such as Danxia in China, Kata Tjuta in Australia and Meteora in Greece.[22][23] There are other landscapes of notorious conglomerates, such as the Buda Hills in Hungary[24]​ or the mallos in Aragon.[25]​.

On a smaller scale there are conglomerates that contain karst and taffoni forms.[22]​.

An example of a conglomerate can be seen in Montserrat, near Barcelona. Here, erosion has created vertical channels that give the characteristic irregular shapes that give the mountain its name (Montserrat literally means "irregular mountain"). The rock is strong enough to be used as a building material, such as in the Abbey of Santa María de Montserrat.

Another example is the Crestone Conglomerate, near the town of Crestone, at the foot of the Sangre de Cristo Mountain Range in the San Luis Valley in Colorado. The Crestone Conglomerate consists of poorly sorted fanglomerates that accumulated in prehistoric alluvial fans and related river systems. Some of these rocks have shades of red and green.

There are conglomerate cliffs on the east coast of Scotland, from Arbroath northwards, along the coasts of the former Angus counties "Angus (Scotland)" and Kincardineshire). Dunnottar Castle stands on a steep conglomerate headland jutting into the North Sea, just south of the town of Stonehaven.

The Copper Harbor Conglomerate is located on both the Keweenaw Peninsula and Isle Royale National Park on Lake Superior.

Conglomerate can also be observed in the domed hills of Kata Tjuta, in the Northern Territory of Australia[26] or those already mentioned in the Buda Hills in Hungary.

In the century it was recognized that a thick layer of the Pottsville conglomerate underlay anthracite coal mining in Pennsylvania.[27]

On Mars "Mars (planet)"), slabs of conglomerate have been found in an outcrop called "Hottah&action=edit&redlink=1 "Hottah (Mars) (not yet redacted)")", and have been interpreted by scientists to have formed in an ancient riverbed. The gravels, which were discovered by NASA's Mars rover Curiosity, range from the size of sand particles to the size of golf balls. Analysis has shown that the pebbles were deposited by a stream that flowed at a walking pace and was between ankle and hip deep.[28]​.

• - Boggs, Sam. (2009) (in English). Petrology of Sedimentary Rocks. Cambridge University Press. ISBN 978-0-521-89716-7.

• - Boggs, Sam. (2014) (in English). Principles of Sedimentology and Stratigraphy., 5th ed. Peason. 560 pp. ISBN 978-1-292-02128-7.

• - Wikimedia Commons hosts a multimedia category on conglomerate.

Deep sea marine environment

On the seafloor, in turbidites, the base of each sequence is usually composed of coarse materials, occasionally conglomerates. In this case, the conglomerates are generally very well sorted, well rounded and often with strong imbrication in the long axis of the clasts.

Shallow water marine environment

Conglomerates are present at the base of sequences established during marine transgressions above an unconformity "Unconformity (geology)") and are known as basal conglomerates. They represent the position of the coast at a particular time and are diachronic").

River

Conglomerates deposited in a fluvial environment are generally well rounded and well ordered. The clasts are transported as bed load and only at times of high flow. The size of clasts decreases as they are transported further due to weathering, so conglomerates are characteristic of immature river systems. In sediments deposited by mature rivers, conglomerates are generally bounded at the base of a channel fill where it is known as pebble laps. Conglomerates deposited in a fluvial environment often have AB planar type imbrication.[18]​.

Alluvial

Fanglomerates are poorly sorted, matrix-rich conglomerates that originated as debris flows on alluvial fans and probably contain the largest accumulations of gravel in the geological record.[19]​.

Glacier

Glaciers transport much coarse-grained material and many glacial deposits are conglomeradic. Tillites, sediments deposited directly by a glacier, are typically poorly ordered, matrix-supported conglomerates. The matrix is ​​usually fine-grained, made up of finely ground rock fragments. Aquifer deposits associated with glaciers are usually conglomeratic and form structures such as eskers.[20]​.

Conglomerates originated from till are called tillite.[21]​.

The geoforms modeled in conglomerate are diverse. In general, the shapes modeled in conglomerate resemble those seen in sandstone.[22]​ This situation would occur because both rocks decompose and erode through the disintegration of grains or clasts.[22]​ On a large scale, conglomerates can constitute slopes, badlands, dissected plateaus, domed hills "Dome (geology)") and stepped slopes.[22]​ Some conglomerate landscapes have become covered as part of World Heritage Sites such as Danxia in China, Kata Tjuta in Australia and Meteora in Greece.[22][23] There are other landscapes of notorious conglomerates, such as the Buda Hills in Hungary[24]​ or the mallos in Aragon.[25]​.

On a smaller scale there are conglomerates that contain karst and taffoni forms.[22]​.

An example of a conglomerate can be seen in Montserrat, near Barcelona. Here, erosion has created vertical channels that give the characteristic irregular shapes that give the mountain its name (Montserrat literally means "irregular mountain"). The rock is strong enough to be used as a building material, such as in the Abbey of Santa María de Montserrat.

Another example is the Crestone Conglomerate, near the town of Crestone, at the foot of the Sangre de Cristo Mountain Range in the San Luis Valley in Colorado. The Crestone Conglomerate consists of poorly sorted fanglomerates that accumulated in prehistoric alluvial fans and related river systems. Some of these rocks have shades of red and green.

There are conglomerate cliffs on the east coast of Scotland, from Arbroath northwards, along the coasts of the former Angus counties "Angus (Scotland)" and Kincardineshire). Dunnottar Castle stands on a steep conglomerate headland jutting into the North Sea, just south of the town of Stonehaven.

The Copper Harbor Conglomerate is located on both the Keweenaw Peninsula and Isle Royale National Park on Lake Superior.

Conglomerate can also be observed in the domed hills of Kata Tjuta, in the Northern Territory of Australia[26] or those already mentioned in the Buda Hills in Hungary.

In the century it was recognized that a thick layer of the Pottsville conglomerate underlay anthracite coal mining in Pennsylvania.[27]

On Mars "Mars (planet)"), slabs of conglomerate have been found in an outcrop called "Hottah&action=edit&redlink=1 "Hottah (Mars) (not yet redacted)")", and have been interpreted by scientists to have formed in an ancient riverbed. The gravels, which were discovered by NASA's Mars rover Curiosity, range from the size of sand particles to the size of golf balls. Analysis has shown that the pebbles were deposited by a stream that flowed at a walking pace and was between ankle and hip deep.[28]​.

• - Boggs, Sam. (2009) (in English). Petrology of Sedimentary Rocks. Cambridge University Press. ISBN 978-0-521-89716-7.

• - Boggs, Sam. (2014) (in English). Principles of Sedimentology and Stratigraphy., 5th ed. Peason. 560 pp. ISBN 978-1-292-02128-7.

• - Wikimedia Commons hosts a multimedia category on conglomerate.