extrusive rock

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extrusive rock

[ik′strü·siv ′räk]
(geology)
References in periodicals archive ?
Histological changes in human dental pulp following application of intrusive and extrusive orthodontic forces.
All extrusive volcanic rocks therefore contain some [sup.
16,21] Extrusive luxation was the least common type of injury, which is in agreement with studies by Cunha et al.
Intrusive and extrusive growth of the Mount St Helens lava dome.
All of the sedimentary rocks above the lowest conglomerates are intercalated with flows of extrusive igneous rocks from at least two eruptive episodes, representing the last volcanism in the Harz (Sansoni, 1971).
Severe fracture of the maxillary alveolar process associated with extrusive luxation and tooth avulsion: a case report.
This model shows that chemical variation within intrusive or extrusive complexes may not always be a result of different source rocks for partial melts or melting percentage alone but some variation can readily be caused by variation in tectonic stresses in the area.
It is a tilted sedimentary fault block with a northeast-trending dip-slope along with Tertiary volcanic rocks of both intrusion and extrusive origins (Wood et al.
Unfortunately, the difficulties concerning the problem of the allegedly directional structure formation are also met in other manufacture processes of building materials and products which include extrusive [24], fibres pulp processing [25] etc.
present 14 papers discussing such topics as creativity and measurement in the search for stratigraphic traps, case studies and future potential of stratigraphic traps in the Tertiary rift basins of Indonesia, identification of stratigraphic traps with subtle seismic amplitude effects in Miocene channel/levee sand systems of the Gulf of Mexico, the importance of stratigraphic plays in the undiscovered resources of the UK continental shelf, application of a sealing surface classification for stratigraphic related traps in the UK Central North Sea, the variability of turbidite sandbody pinchout and its impact on hydrocarbon recovery in stratigraphically trapped fields, and extrusive sandstone as a possible new class of stratigraphic trap.
To the south and southwest of the Palmyrids, Damascus basin contains a basal sequence of middle Miocene (Helvetian age) volcanic extrusive rocks, which are unconformably overlain by sedimentary sequences of Pliocene and Quaternary ages.
Such lakes could result from local subsidence due to the cooling of basalts in the Snake River Plain, or from damming by extrusive volcanism (Othberg, 1994; Malde, 1991).