Riphean sequence
Quick Summary
The Riphean sequence refers to a geological period and rock formation primarily found in Russia, spanning from approximately 1.6 billion to 800 million years ago. These sedimentary rocks are characterized by conglomerates, sandstones, siltstones, and shales, often appearing as oxidized red beds.1
The formation of the Riphean sequence occurred on extensive cratons of continental crust. Sedimentary rocks from this era, like the Riphean sequence, were deposited in warm, tropical waters, indicating the geographic position of continents during that time. This period saw significant geological activity, including the formation of orogenic belts and the deposition of various sediments on continental shelves and margins.231
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
PrecambrianOrogenic beltsThe Riphean sequence spans the period from 1.6 billion to 800 million years ago and occurs primarily in Russia. The Sinian sequence in China extends from 800 to 570 million years ago, toward the end of the Precambrian time. The sediments are terrigenous debris characterized by…
Read MoreThe Riphean sequence spans the period from 1.6 billion to 800 million years ago and occurs primarily in Russia. The Sinian sequence in China extends from 800 to 570 million years ago, toward the end of the Precambrian time. The sediments are terrigenous debris characterized by…
Read More
PrecambrianProterozoic plate movementsFor example, the Riphean sequence in Russia and also the Sinian sequence in China were able to form on extensive cratons of continental crust.
Read MoreFor example, the Riphean sequence in Russia and also the Sinian sequence in China were able to form on extensive cratons of continental crust.
Read More
PrecambrianPaleogeographythat stromatolite-bearing dolomites of Riphean rock, a sedimentary sequence spanning the period from 1.65 billion to 800 million years ago, were deposited in warm, tropical waters. Riphean rock is primarily located in the East European craton, which extends from Denmark to the Ural Mountains, and in the Siberian craton…
Read Morethat stromatolite-bearing dolomites of Riphean rock, a sedimentary sequence spanning the period from 1.65 billion to 800 million years ago, were deposited in warm, tropical waters. Riphean rock is primarily located in the East European craton, which extends from Denmark to the Ural Mountains, and in the Siberian craton…
Read More