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It is a "convenience" label rather than a geological term, since at least 46 different rock types are represented. One of the most common rocks in the assemblage is known as Preseli Spotted Dolerite—a chemically altered igneous rock containing spots or clusters of secondary minerals replacing plagioclase feldspar. It is a medium grained dark ...
More specifically, they are also called jewel caterpillars due to the colorful bead-like gelatinous mass covering the exoskeleton of many species. Female Dalceridae have "accessory glands" that apply a rapidly drying liquid to the eggs. [ 1 ]
It consists of a series of outcrops of spotted dolerite similar to that of other tors in the area, and several other prehistoric sites have been identified nearby. The mountain-top setting provides commanding views across the surrounding countryside and across Cardigan Bay to the Llŷn Peninsula .
Diabase (/ ˈ d aɪ. ə ˌ b eɪ s /), also called dolerite (/ ˈ d ɒ l. ə ˌ r aɪ t /) or microgabbro, [1] is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro.
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The Prospect dolerite intrusion, or Prospect intrusion, is a Jurassic picrite or dolerite laccolith that is situated in Sydney, New South Wales, Australia. [2] Lying in the heart of Cumberland Plain, in the suburb of Pemulwuy (previously Greystanes), the intrusion is Sydney's largest body of igneous rock, rising to a height of 117 metres (384 ft) above sea level. [3]
Quartz dolerite or quartz diabase is an intrusive rock similar to dolerite (also called diabase), but with an excess of quartz. Dolerite is similar in composition to basalt, which is volcanic, and gabbro, which is plutonic. The differing crystal sizes are due to the different rate of cooling, basalt cools quickly and has a very fine structure ...
Manduca quinquemaculata, the five-spotted hawkmoth, is a brown and gray hawk moth of the family Sphingidae. The caterpillar , often referred to as the tomato hornworm , can be a major pest in gardens; they get their name from a dark projection on their posterior end and their use of tomatoes as host plants.