beachrock


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beachrock

[′bēch‚räk]
(petrology)
A friable to well-cemented rock made of calcareous skeletal debris that is cemented together by calcium carbonate.
References in periodicals archive ?
Broken slabs of the beachrock show up to three caliche crusts.
Indeed, evidence of pre-2600 year ago occupation is limited to scattered shells of possible cultural origin cemented within beachrock at Sokoli on Dauar which have been radiocarbon dated to 3060[+ or -]60 BP (2800 years ago) and 3150[+ or -]70 BP (2850 years ago) (Carter 2004: 153).
Aragonite-cemented sandstone from outer continental shelf off Delaware Bay: submarine lithification mechanism yields product resembling beachrock.
To determine grain size distribution, cores (8 cm in diameter) of sediment were taken adjacent to sponges, from the surface down to the beachrock.
Other well-known examples in the region are beachrock or limestone slabs used for chiefly backrests, fortifications, and tomb enclosures in Tonga (Burley, 1993; Burley, 1998; Kirch, 2000; McKern, 1929), the stone faces of Palau (Osborne 1979:161; 174-176), latte stones in the Marianas (Russell 1998), basalt columns and boulders in both Pohnpei (Ayres and Scheller 2001) and Kosrae (Athens, 1990; Athens, 1995; Rainbird, 1995), and the stone money disks of Yap (Fitzpatrick, 2002, 2003a; Fitzpatrick and Diveley, 2004).