- The
tholeiitic magma series (/ˌθoʊliˈaɪtɪk/) is one of two main
magma series in
subalkaline igneous rocks, the
other being the calc-alkaline series. A...
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abundant rocks include tholeiitic to
transitional mafic fragmental rocks and m****ive flows, as well as
felsic tuffs,
tholeiitic pillow basalts and minor...
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subalkaline magma series, the
other subalkaline magma series being the
tholeiitic series. A
magma series is a
series of
compositions that
describes the...
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tectonic setting produces basalt with its own
distinctive characteristics.
Tholeiitic basalt,
which is
relatively rich in iron and poor in
alkali metals and...
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example is nephelinite.
Magmas are
further divided into
three series: The
tholeiitic series –
basaltic andesites and andesites. The calc-alkaline
series –...
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Examples of lava
compositions (wt%)
Component Nephelinite Tholeiitic picrite Tholeiitic basalt Andesite Rhyolite SiO2 39.7 46.4 53.8 60.0 73.2 TiO2 2...
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Tholeiitic basalt magma SiO2 (53.8%) Al2O3 (13.9%) FeO (9.3%) CaO (7.9%) MgO (4.1%) Na2O (3.0%) Fe2O3 (2.6%) TiO2 (2.0%) K2O (1.5%) P2O5...
- few 22-million-year-old vents. The
composition of the
lavas varies from
tholeiitic basalt to rhyolite.
Landforms include sheet flows,
cinder cones, and shield...
- N ↓
Formed by
Erosion and
volcanism Geology basaltic tephra deposits,
tholeiitic pillow lavas, limestone,mudstone and
siltstone Highest elevation 133 m...
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Texture in a thin
section of
tholeiitic basalt...
