radiolarite


Also found in: Dictionary, Thesaurus.
Related to radiolarite: radiolarian chert

radiolarite

[‚rād·ē·ō′la‚rīt]
(geology)
A whitish, hard, consolidated equivalent of radiolarian earth.
Radiolarian ooze that has been indurated.
References in periodicals archive ?
He considered that the occurrences of radiolarites and silicic limestones were associated with the basaltic rocks.
His stratigraphy consisted of a "basement old complex" or the "Nicoya sensu stricto" including the Santa Elena peridotites, pillow lavas (the Coyote-Junquillal unit), and the pelagic radiolarites (Sardinal Formation).
The majority of the authors assumed that the age of the radiolarites were closer to the age of magmatism, putting away the clear magmatic and tectonic contacts or sub-estimated their role.
The radiolarites have ages of Early Jurassic (Callovian) to Late Cretaceous (early Santonian) (Galli-Olivier, 1979; Bourgois et al.
1995) that yields Middle Jurassic to Late Cretaceous ages, indicating that in effect the radiolarites were megaxenoliths.
All this period is developed almost at the margin of the recent continental drifting and plate tectonic model, but under the precept of the association of ophiolites (serpentine, gabbro, diabase, spilite, and related rocks), and interpreted the radiolarites as deep-sea conditions (Steinmann, 1905, 1927).
The publication of the textbook of Coleman (1977), the beginning of mobilistic models (tectonic nappes, obduction, terranes, accretion) the use of a considerable amount of geochemical analyses (including Sr isotopes and tectono-magmatic diagrams) of igneous rocks (Fig, 4), together with sedimentology of the radiolarites, and extensive mapping dominated this stage of scientific research.
Matapalo" as defined includes the radiolarites, which De Boer (1979) called Sardinal Formation, Sick (1989) as Sardinal unit, and Gursky et al.
Both group of authors concluded that the radiolarites ages do not represent the formation age of the igneous neighbor rocks.
2006: Emplacement of Jurassic-Lower Cretaceous radiolarites of the Nicoya Complex (Costa Rica).
On the opposite side of Mount Bianco some native copper, associated with cuprite, connellite and other secondary copper minerals was recently collected in the radiolarites of the Monte Alpe formations.
Anatase is also widespread in radiolarites at Monte Chiappozzo and several other localities.