| Aggregate:
|
Particles of rock which, when brought together in a bound or unbound condition, form part or whole of a building or civil engineering structure.
|
| Biogenic:
|
A material formed by organisms or biological activity.
|
| Carboniferous:
|
A period of geological time from 359 to 318 million years ago.
|
| Clast:
|
A rock fragment; commonly applied to a fragment of pre-existing rock included in a younger sediment.
|
| Evaporite:
|
A mineral formed from precipitation from concentrated brine.
|
| Flint:
|
Variety of chert occurring in the Chalk of northern Europe.
|
| Fluvial:
|
Relating to a river; a deposit produced by the action of a river.
|
| Glaciofluvial:
|
May be applied to sediment transported and deposited by running water discharged from an ice mass.
|
| Glacial deposits:
|
Heterogeneous material transported by glaciers or icebergs and deposited directly on land or in the sea. Often poorly sorted.
|
| Gravel:
|
Granular material in clasts between 4 and 80 millimetres; coarse aggregate.
Used for general and concrete applications.
|
| Holocene:
|
The youngest epoch of the Quaternary period from 0.01 million years to present.
|
| Mineral:
|
A naturally formed chemical element or compound and normally having a characteristic crystal form and a distinct composition.
|
| Moraine:
|
A landform deposited directly by a glacier.
|
| Permian:
|
A period of geological time from 299 to 251 million years ago.
|
| Placer:
|
A deposit of economic minerals formed by natural (often gravity driven) processes.
|
| Periglacial:
|
Cold, dry climatic conditions occurring away from glacial ice.
|
| Pleistocene:
|
An epoch of the Quaternary period from 2.58 to 0.01 million years ago.
|
| Quartz:
|
Crystalline silica; an important durable rock-forming mineral.
|
| Quaternary:
|
An era of geological time from 2.58 million years ago to present.
|
| Reserve:
|
That part of a mineral resource that is economical to work and has been fully evaluated on a systematic basis by drilling and sampling and is free from legal or other obstruction that might inhibit extraction.
|
| Resource:
|
Natural accumulations of minerals, or bodies of rock, that are, or may become, of potential economic interest as a basis for the extraction of a commodity.
|
| Sand:
|
A granular material that is finer than 4 mm, but coarser than 0.063 mm.
|
| Sandstone:
|
A sedimentary rock made of abundant fragments of sand size set in a fine-grained matrix or cementing material. The sand particles are usually of quartz.
|
| Siliclastic:
|
a clastic sediment predominantly (over 50%) composed of silicate minerals
|
| Till:
|
glacial sediments, often unsorted clay and boulders deposited directly from glaciers.
|
| Triassic:
|
A Period of geological time from 250 to 200 million years ago.
|
| Westphalian:
|
A Period of geological time during the late Carboniferous.
|