Chiefly Scottish and English regional (north-eastern). Coarse gravel; sandstone containing pebbles; conglomerate. Now rare.

= greywacke, n.

Gompholite.

Originally: any of a series of coarse-grained, earthy sandstones and shales forming extensive deposits in the Harz Mountains and other parts of…

Scottish. Of stone, metal, etc.: containing rounded fragments or nodules (cf. yolk, n.1 3a). Chiefly in yolky-stone n. a kind of conglomerate. Obs…

A massive conglomerate of Miocene age which is associated with the molasse of the Swiss Alps and contains pebbles likened to nail heads.

a deposit of flints in chalk, found esp. in the coombes of Sussex; = head, n.1 40d(a).

(a) Geology a deposit of conglomerate containing pebbles, esp. one from which they readily work loose with weathering; (b) Nuclear Physics a…

transferred. A conglomerate of gravel and ice.

The cemented glacial gravels of northern Italy.

A gold-bearing conglomerate of quartz pebbles in a quartzitic matrix found in the Witwatersrand, South Africa (also with capital initial); (in…

An iron-rich laterite or hardpan consisting of conglomerate.

spec. in Geology with reference to compression, thrust, or shattering of rock, as crush-belt, crush-breccia, crush-conglomerate, crush-line, crush-mat…

a conglomerate forming the lowest of a particular series of strata.

A breccia or conglomerate formed by the cementation of rock debris, etc., by calcareous material.

Any clastic sedimentary rock composed of grains coarser than sand, i.e. greater than 2 mm (approx. 1/10 inch) in diameter. Cf. rudaceous, adj., pse…

A rock consisting of comparatively erosion-resistant fragments of various sizes deposited in an alluvial fan and consolidated into a solid mass.

a conglomeration of calcareous beach sand cemented by chalk into rock formation, found on coral reefs.