The Moeraki Boulders are concretions created by the cementation of the Paleocene mudstone of the Moeraki Formation, from which they have been exhumed by coastal erosion. The main body of the boulders started forming in what was then marine mud, …

May 19, 2023 · The Moeraki Boulders range in size, with some reaching up to 3 meters (10 feet) in diameter and weighing several tons. They are formed from sedimentary rock, specifically mudstone, and were originally formed around 60 million years ago during the Paleocene era.

Aug 7, 2013 · It is thought the stones were created by the cementation of Paleocene mudstone and were then buried in the mudstone cliffs. Found on new Zealand's Otago coast in isolation as well as clusters,...

Jul 27, 2022 · They have been previously exhumed from the mudstone and bedrock enclosing them and concentrated on the beach by erosion. The Moeraki Boulders have become a major tourist attraction site as several frequent here to see them. These boulders come in different shapes and sizes.

Some armored mud boulders rolled along and passed away the channelized gravel pavement, and deposited on hemipelagic mud in lower slope, not having been reworked.

Nov 22, 2023 · Mudstone is a type of sedimentary rock that is characterized by its fine-grained nature and is composed primarily of silt- and clay-sized particles. It is one of the most common sedimentary rocks and plays a significant role in the field of geology.

Dec 29, 2015 · Boulder exposed from mudstone formation on track to the beach. Interpreting the boulders within a larger geological framework, the Moeraki Formation has been classified as Palaeocene, due to the types of foraminiferans found in the muddy sediments.

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Mudrocks are a class of fine-grained siliciclastic sedimentary rocks. The varying types of mudrocks include siltstone, claystone, mudstone and shale. Most of the particles of which the stone is composed are less than 1⁄16 mm (0.0625 mm; 0.00246 in) and are too small to study readily in the field.

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