columnar joint वाक्य
उदाहरण वाक्य
मोबाइल
- Once the alkali olivine basalt flows cooled, they formed well-developed columnar joints.
- As a result, the domes display the shaps and columnar joints typical of subglacial volcanoes.
- As a result, the domes display the shapes and columnar joints typical of subglacial volcanoes.
- Later, a small dacite lava flow was erupted, which cooled into well-preserved columnar joints.
- The dacite is characterized by columnar joints, } } in diameter, and exhibiting locally radiating patterns.
- Distal sections of lava flows are glassy and contain minor diameter columnar joints with horizontal or nearby radiating orientations.
- The small size of the columnar joints indicates that the erupted lava was cooled immediately and are mainly located on the dome's summit.
- The most spectacular of all are the hexagonal columnar joints which are found near the east dam of the High Island Reservoir and Po Pin Chau area.
- Ages of ranging from Late Pliocene to Early Pleistocene have been suggested for the oldest known parts of the volcano which are dacitic lava flows with columnar joints.
- The formation is a set of columnar joints in a basalt plug resembling the larger formation in Devils Postpile National Monument, to the south in the Sierra Nevada.
- Proximal sections of lava flows contain vertical, well developed, large-diameter columnar joints, and lie beneath scoriaeous oxidized flow breccia, suggesting a possible subaerial origin.
- Several fine-scale columnar joints and the overall structure of the lava flow suggest that its western portion, along the length of the channel, ponded against glacial ice.
- Its prominent and enigmatic edifice is composed of basaltic andesite to dacite of unknown age and may represent a group of The Castle, which contains horizontal and radiating columnar joints.
- These edifices have not been studied in detail but they could have formed during the same period as the Ember Ridge subglacial domes due to their structures, columnar joints and compositions.
- Geoscience applications to date include detailed mapping of fault scarps, geologic outcrops, fault-surface roughness, frost polygons, lava lakes, dikes, fissures, glaciers, columnar joints and hillside drainages.
- The columnar joints and platy joints on this island are all very well developed : being originally a hexagon or a pentagon, the rock columns are now pretty much circular on the edges due to erosion.
- "' Cooling joints "'are columnar joints that result from the cooling of either lava from the exposed surface of a lava lake or flood basalt flow or the sides of a tabular igneous, typically basaltic, intrusion.
- This volcanic centre formed in a subglacial to englacial environment between 130, 000 and 90, 000 years ago, as shown by the existence of distinctive, radial columnar joint patterns, a glassy to fine-grained matrix and stratigraphic relationships to overlying glacial till.
- Also found are outcrops of strongly jointed volcanic glass in Clear Creek Canyon along the I-70 corridor called the Skinner Canyon Ignimbrites a spectacular development and exposures of columnar joints in the rewelded ash flow tuffs here are almost unique in the Colorado Plateau because of the limited exposures of these types of volcanic rocks.
- There has never been a real answer as to what the truth really is, and there has long been two discrepant theories among academics : one states that " the sunken ancient city is the basaltic columnar joint terrain extended under the sea from Tongpan and Hujing, therefore forming the false impression of a sunken city ".
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