Coral sand fills the long shores. Tiny, crumbling, rocky islands represented in grayish blue, pink, beige and a deeper coral line the water's edge. The sky was full of rapture, no doubt reflecting a stormy day in my family. I'll probably do another rendering of it with softer colors.
The photograph I took just under this is typical of the New England seacoast. Lots and lots of granite. Granite is an igneous rock. Igneous rocks were a result of fire. Wikipedia tells us," I
gneous rocks include rocks that have solidified from a melt
either below the Earth's surface as intrusives or on the surface as
extrusives or volcanic eruptions."
"Granite (
/ˈɡrænɨt/) is a common widely occurring type of
intrusive,
felsic,
igneous rock
which is granular and crystalline in texture. This rock consists mainly
of quartz, mica, and feldspar. Occasionally some individual crystals (
phenocrysts) are larger than the
groundmass, in which case the texture is known as
porphyritic. A granitic rock with a porphyritic texture is sometimes known as a
porphyry. Granites can be pink to gray in color, depending on their chemistry and mineralogy. By
definition, granite is an igneous rock with at least 20%
quartz by volume. Granite differs from
granodiorite in that at least 35% of the
feldspar in granite is
alkali feldspar as opposed to
plagioclase; it is the alkali feldspar that gives many granites a distinctive pink color.
Outcrops of granite tend to form
tors and rounded
massifs. Granites sometimes occur in circular
depressions surrounded by a range of hills, formed by the
metamorphic aureole or
hornfels. Granite is usually found in the
continental plates of the Earth's crust.
Granite is nearly always massive (lacking internal structures), hard
and tough, and therefore it has gained widespread use as a construction
stone. The average
density of granite is between 2.65
[1] and 2.75 g/cm
3, its compressive strength usually lies above 200 MPa, and its
viscosity near
STP is 3-6 • 10
19 Pa·s.
[2] Melting temperature is
1215 - 1260 °C.
[3]
The word granite comes from the
Latin granum, a grain, in reference to the coarse-grained structure of such a
crystalline rock.
Granitoid is a general, descriptive field term for light-colored, coarse-grained igneous rocks.
Petrographic examination is required for identification of specific types of granitoids.
[4]"
Source: Wikipedia
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