Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian

Block Sea Landscape

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_184

Synonym: Rock block field landscape

This is a landscape in permafrost regions. In these regions, the temperature is permanently below zero (−5 to −15 °C), and physical weathering is severe. Under such low-temperature conditions and due to the effect of plucking, abundant rock pieces and gravels are left behind on the ground, and this landform is called a block sea or a rock block field. Block seas are generally located in the ground with a slope less than 10°, where no horizontal movement takes place. The formation of a block sea is generally associated with rock block masses, such as granite, basalt, sandstone and quartzite (Fig. 19).
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