The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) which contains the Upper Cretaceous limestone...

Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under...

to: The Chalk Group, a stratigraphic unit in northwest Europe. The Chalk country, a region of Discworld Blackboard chalk and sidewalk chalk, a material...

this formation within the Chalk Group is called the West Melbury Marly Chalk Formation. The Channel Tunnel was bored through Chalk Marl for its entire length...

Downland, chalkland, chalk downs or just downs are areas of open chalk hills, such as the North Downs. This term is used to describe the characteristic...

Alexander John Gervase Chalk KC (born 8 August 1976) is a British politician and barrister. He served as Lord Chancellor and Secretary of State for Justice...

In military terminology, a chalk is a group of paratroopers or other soldiers that deploy from a single aircraft. A chalk often corresponds to a platoon-sized...

the band of Cretaceous chalk that runs from the south-west to the north-east of the county and forms part of the Chalk Group that underlies much of the...

of Wight monocline, the cause of the steeply-dipping outcrops of the Chalk Group and overlying Paleogene strata seen at The Needles, Alum Bay and Whitecliff...

(2023). "Microcrinoids (Roveacrinidae) from the middle–upper Cenomanian Grey Chalk Subgroup, Dover (Kent, United Kingdom): biostratigraphy and re-evaluation...

of the North Sea. Chalk is not easily consolidated and the Chalk Group still consists of loose sediments in many places. The group also has other limestones...

upper (late) Cretaceous are the various formations that comprise the Chalk Group and give rise to the county's downlands. Overlying these rocks are the...

downlands throughout eastern and southern England formed by the rocks of the Chalk Group and largely lies within the county of Wiltshire, but stretches into Hampshire...

system of chalk downlands throughout eastern and southern England, formed between 65 and 95 million years ago, comprising rocks of the Chalk Group; this also...

the sea. The hills are part of a system of chalk downlands in southern England formed from the Chalk Group which also includes Salisbury Plain and the...

Sidewalk chalk is typically large and thick sticks of chalk (calcium sulfate, gypsum, rather than calcium carbonate, rock chalk) that come in multiple...

Nodular Chalk Formation, overlain successively by the New Pit Chalk, Lewes Nodular Chalk, Seaford Chalk, Newhaven Chalk, Culver Chalk and Portsdown Chalk formations...

the Isle of Wight where it is known as Blue Slipper. Gault underlies the chalk beneath the London Basin, generally overlying eroded rocks of Jurassic and...

Calabash chalk is a geophagic material popularly consumed in West African countries for pleasure, and by pregnant women as a cure for nausea. Geophagia...

The Austin Chalk is an upper Cretaceous geologic formation in the Gulf Coast region of the United States. It is named after type section outcrops near...

chalk is part of a system of chalk downlands throughout eastern and southern England formed by the rocks of the Chalk Group and stretching from the Dorset...

its porosity, which varies from 0.1% for the densest limestone to 40% for chalk. The density correspondingly ranges from 1.5 to 2.7 g/cm3. Although relatively...

Bane Chalk Subgroup Ballycastle Chalk Formation Port Calliagh Chalk Formation Tanderagee Chalk Formation Ballymagarry Chalk Formation Portush Chalk Formation...

upper (late) Cretaceous are the various formations that comprise the Chalk Group. Overlying these rocks in some areas are less consolidated Palaeogene...

Wealden Group is overlain by the Chalk Group, which is subdivided into the White Chalk Subgroup and the Grey Chalk Subgroup. Each of the subgroups is...

a box of magic chalk that allows him to draw portals into the ChalkZone, an alternate dimension where everything ever drawn with chalk and later erased...

White Chalk is the seventh studio album by the English singer-songwriter and musician PJ Harvey, released on 24 September 2007 on Island Records. Work...

Chalk streams are rivers that rise from springs in landscapes with chalk bedrock. Since chalk is permeable, water percolates easily through the ground...

Chalk River Laboratories (French: Laboratoires de Chalk River; also known as CRL, Chalk River Labs and formerly Chalk River Nuclear Laboratories, CRNL)...

limestones. Lithostratigraphically, the Rügen chalk belongs to the Hemmoor Formation of the Chalk Group and is formally defined as the Rügen Member within...