masa さん、F.344 さん、S9000 さん、 ね、不思議な岩でしょ。 どう見ても木にしか見えなかった。 おまけに、岩の周りは木っ端のようにしか見えない 小さな岩の欠片で敷き詰められてたし。
THE CAPE ELIZABETH FORMATION AT TWO LIGHTS STATE PARK The Cape Elizabeth Formation forms the cliffs in the Two Lights area and is composed of tan quartzite and dark gray phyllite.
Phyllite is a rather soft metamorphic rock of such fineness of grain that the individual mineral particles can only be seen under a microscope. If you were to examine a thin slice of this rock with a microscope you would find that it is composed mostly of fine grains of white and dark colored mica, minerals that readily split into sheets. Partly due to the presence of large quantities of mica, phyllite splits easily in one direction, parallel to the mica flakes. We say it has "cleavage". In this respect, phyllite is somewhat like slate, except that its cleavage is wavy or crinkled rather than smooth like that of slate. http://digitalmaine.com/cgi/viewcontent.cgi?article=1041&context=mgs_publications