andesitic


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andesitic

(ˌændɪˈzɪtɪk)
adj
relating to, or containing, andesite
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References in periodicals archive ?
The Silver Star property is underlain by Cretaceous Kasalka group andesitic volcanics and Middle Jurassic Bowser Lake group clastic sediments.
Country rocks are mainly Cretaceous metabasalts and metasediments locally intruded by andesitic bodies.
2000, Remobilisation of andesitic magma by intrusion of mafic magma at the Soufriere Hills volcano, Montserrat, West Indies.
Surrounding andesitic lavas and pyroclastic material have much lower positive anomalies (+ 100 to + 2,000 nT; Fig.
This area mainly consists of Eocene basaltic-andesite to andesitic volcanic rocks with tuff and other pyroclastic rocks with minor intercalated sedimentary lenses such as shale, gypsiferous marl, and shallow depth limestone (Aftabi and Atapour, 2000).
In its application the firm said: "The stone quarried at Harden was formed approximately 390 million years ago, when magma from deep underground was forced up into the surrounding andesitic rocks, forming a thick blister-like intrusion of mica-porphyrite, which is now commonly called Harden red.
The rocks of Noorabad ophiolite consist of peridotites, serpentinites and pegmatite gabbros as mantle sequence, whereas crustal sequences are composed of locally layered gabbros, isotropic gabbros, sheeted dike complex, basaltic to andesitic lavas and sedimentary rock (radiolarites and late cretaceous pelagic limestones) (Fig.
Eocene to Oligocene volcanic rocks of andesitic rhyolitic and tuffaceous compositions are also present.
All Hat property drill holes passed through Late Triassic age Stuhini formation andesitic flows and tuffs and coeval iron-rich gabbroic intrusive rocks and all rocks, with the exception of a few apparently much younger dykes, are variably altered with development of chlorite, magnetite and, less frequently, biotite.
Next, Kebobutak formation material is andesitic breccias, tuff, lapili tuff, agglomerate and intercalations of andesitic lava flows.