| dbo:abstract
|
- Geschiebelehm, auch als Blocklehm bezeichnet, ist der Teil des Grundmoränenmaterials, der durch oberflächliche Verwitterung aus dem kalkhaltigen Geschiebemergel hervorgegangen ist. Geschiebelehm kann darüber hinaus schon primär durch die Ablagerung von kalkfreiem Moränenmaterial entstehen. Er besteht überwiegend aus Sand und Schluff. Der Gehalt an Ton unterliegt starken Schwankungen. Das glaziale, meist ungeschichtete Sediment kann mit Gesteinsbruchstücken, Blöcken und anderen Geschiebekomponenten durchsetzt sein. (de)
- Boulder clay is a geological deposit of clay, often full of boulders, which is formed out of the ground moraine material of glaciers and ice-sheets. It was the typical deposit of the Glacial Period in Northern Europe and North America. Boulder clay is distinguished from other clay in that it contains more boulders. The clay is scraped from the top layer of older rock by the movement of a glacier or ice sheet. An ice sheet pushes rocks, boulders and everything else in its path, which in turn wears the rock into silt-like grain, which makes up the clay. Clay formed out of Old Red Sandstone areas is red, over Carboniferous rocks it is often black, over Silurian rock it may be buff or grey, and where the ice has passed over chalk, the clay may be quite white and chalky (chalky boulder clay). Much boulder clay is of a blueish-grey until exposed to weather, which transforms it to a brown colour. Boulder clay is classed with a group of poorly sorted materials, described by the general term diamicton. It is usually a stiff, tough clay devoid of stratification, though some varieties are distinctly laminated. Occasionally, within the boulder clay, there are irregular lenticular masses of more or less stratified sand, gravel or loam. The boulders are held within the clay in an irregular manner, and they vary in size from pebbles up to masses many tons in weight. Typically, they are somewhat oblong, and often they possess a flat side or sole; they may be angular, subangular, or well-rounded. If they are hard rocks, they frequently bear grooves and scratches caused by contact with other rocks while held firmly in the moving glacier ice. Like the clay in which they are borne, the boulders belong to districts over which the ice has travelled; in some regions they are mainly limestones or sandstones; in others they are granite, basalts, gneisses, etc.; they may consist of any hard rock. By the nature of the contained boulders, it is often possible to trace the path along which a vanished ice-sheet moved; thus in the glacial drift of the east coast of England, many Scandinavian rocks can be recognized. With the exception of foraminifera, which have been found in the boulder clay of widely separated regions, fossils are practically unknown. In some maritime districts, seashells have been incorporated with the clay. A classic example of boulder clay can be seen in England at the rapidly eroding cliffs of Hornsea, situated along the Holderness coast in East Yorkshire. (en)
- Téarma geolaíoch is ea cré bholláin ar dheascadh nó ráthach, a chuimsíonn dríodar neamhshrathaithe neamhscartha cré, gainimh, gairbhéil is bolláin a fágadh nuair a chúlaigh na hoighearshruthanna is na leaca oighir. I mBéarla, tugtar till uirthi freisin. (ga)
- Une argile à blocaux est une masse d'argile contenant des cailloux de toutes formes disposés sans ordre provenant de la moraine terrestre des glaciers et des inlandsis partout où ils passèrent. C'était le gisement typique de la période glaciaire en Europe du Nord et en Amérique du Nord. (fr)
- Keileem is een grondsoort bestaande uit een ongesorteerd mengsel van keien, grind, zand, klei en leem. Vaak worden in keileem ook zwerfstenen gevonden. Daarnaast kwam er oorspronkelijk vaak ook kalk in keileem voor, dat door chemische verwering vrijwel volledig is verdwenen. Keileem wordt onder landijs afgezet en kan dan ook als een vorm van till (grondmorene) worden beschouwd. (nl)
- Валу́нный су́глинок — грубая несортированная порода (диамикт), в которой содержится материал различной крупности — от валунов, гальки и щебня до тонкого песка и пыли. Состав валунного суглинка заметно изменяется в зависимости от условий и района формирования. Большинство древних и современных морен сложены валунными суглинками (ru)
- 砾石粘土（英語：boulder clay）是一種粘土的沉積物，但充滿砾石，由冰川和冰蓋的冰磧物形成。是北歐和北美冰河期的典型沉積物。 砾石粘土與其他粘土的區別在於它包含更多的砾石。當冰川或冰蓋移動時，粘土會被從圍岩石刮下，被冰川或冰蓋帶走。同時冰川或冰蓋内的岩石也會被磨損成粉砂狀顆粒，也會構成粘土。若冰川或冰蓋途徑老紅砂岩地區，其形成的粘土是紅色的；途徑石炭紀岩石地區，粘土通常是黑色的；途徑志留紀岩石地區，粘土可能是淺黃色或灰色的；途徑白堊地區，粘土可能是白色。許多砾石粘土在暴露於空氣之后都由是藍灰色轉變為棕色。 砾石粘土被歸類為一組淘選度低的沉積物，屬於混杂沉积物一種。它通常是一種堅硬粘土，沒有分層，儘管一些品種有明顯分層。偶爾，在砾石粘土中，有透鏡狀塊分層的沙子、礫石或壤土。 砾石在在粘土中分佈無規則，其顆粒大小從鵝卵石到重達數噸的砾石不等。通常它們有點長方形，並且具有平坦的側面或底部。但它們可能是有棱角的、亞棱角的或圓型的。如果它們是堅硬的，當它們在冰川移動時，與其他岩石接觸摩擦會產生凹槽和划痕。就如同載它們的粘土一樣，砾石的岩性與冰川所經過的區域有關。它們主要是石灰岩或砂岩，也可能是花崗岩、玄武岩、片麻岩等，任何堅硬的岩石都可構成砾石。利用砾石的岩性，可以瞭解過去冰蓋或冰川移動的路徑。因此，在英格蘭東海岸的冰川堆積物中，有許多斯堪的納維亞的岩石。砾石粘土除了有孔蟲外，含化石很少。在一些海域，砾石粘土中有貝殼與粘土混合在一起。 (zh)
|
| rdfs:comment
|
- Geschiebelehm, auch als Blocklehm bezeichnet, ist der Teil des Grundmoränenmaterials, der durch oberflächliche Verwitterung aus dem kalkhaltigen Geschiebemergel hervorgegangen ist. Geschiebelehm kann darüber hinaus schon primär durch die Ablagerung von kalkfreiem Moränenmaterial entstehen. Er besteht überwiegend aus Sand und Schluff. Der Gehalt an Ton unterliegt starken Schwankungen. Das glaziale, meist ungeschichtete Sediment kann mit Gesteinsbruchstücken, Blöcken und anderen Geschiebekomponenten durchsetzt sein. (de)
- Téarma geolaíoch is ea cré bholláin ar dheascadh nó ráthach, a chuimsíonn dríodar neamhshrathaithe neamhscartha cré, gainimh, gairbhéil is bolláin a fágadh nuair a chúlaigh na hoighearshruthanna is na leaca oighir. I mBéarla, tugtar till uirthi freisin. (ga)
- Une argile à blocaux est une masse d'argile contenant des cailloux de toutes formes disposés sans ordre provenant de la moraine terrestre des glaciers et des inlandsis partout où ils passèrent. C'était le gisement typique de la période glaciaire en Europe du Nord et en Amérique du Nord. (fr)
- Keileem is een grondsoort bestaande uit een ongesorteerd mengsel van keien, grind, zand, klei en leem. Vaak worden in keileem ook zwerfstenen gevonden. Daarnaast kwam er oorspronkelijk vaak ook kalk in keileem voor, dat door chemische verwering vrijwel volledig is verdwenen. Keileem wordt onder landijs afgezet en kan dan ook als een vorm van till (grondmorene) worden beschouwd. (nl)
- Валу́нный су́глинок — грубая несортированная порода (диамикт), в которой содержится материал различной крупности — от валунов, гальки и щебня до тонкого песка и пыли. Состав валунного суглинка заметно изменяется в зависимости от условий и района формирования. Большинство древних и современных морен сложены валунными суглинками (ru)
- Boulder clay is a geological deposit of clay, often full of boulders, which is formed out of the ground moraine material of glaciers and ice-sheets. It was the typical deposit of the Glacial Period in Northern Europe and North America. Boulder clay is classed with a group of poorly sorted materials, described by the general term diamicton. It is usually a stiff, tough clay devoid of stratification, though some varieties are distinctly laminated. Occasionally, within the boulder clay, there are irregular lenticular masses of more or less stratified sand, gravel or loam. (en)
- 砾石粘土（英語：boulder clay）是一種粘土的沉積物，但充滿砾石，由冰川和冰蓋的冰磧物形成。是北歐和北美冰河期的典型沉積物。 砾石粘土與其他粘土的區別在於它包含更多的砾石。當冰川或冰蓋移動時，粘土會被從圍岩石刮下，被冰川或冰蓋帶走。同時冰川或冰蓋内的岩石也會被磨損成粉砂狀顆粒，也會構成粘土。若冰川或冰蓋途徑老紅砂岩地區，其形成的粘土是紅色的；途徑石炭紀岩石地區，粘土通常是黑色的；途徑志留紀岩石地區，粘土可能是淺黃色或灰色的；途徑白堊地區，粘土可能是白色。許多砾石粘土在暴露於空氣之后都由是藍灰色轉變為棕色。 砾石粘土被歸類為一組淘選度低的沉積物，屬於混杂沉积物一種。它通常是一種堅硬粘土，沒有分層，儘管一些品種有明顯分層。偶爾，在砾石粘土中，有透鏡狀塊分層的沙子、礫石或壤土。 (zh)
|
