With the development of the interior flat there has probably been a notable decrease in the rate of growth of the outer alluvial fan because so much
https://books.google.com/books?id=6ORZAAAAYAAJ&pg=PA119&lpg=...
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which indicate an outer alluvial fan to ephemeral stream to playa-like flood-plain environment. The observed soft-sediment deformations, neptunian dykes and

https://books.google.com/books?id=EmPvCQAAQBAJ&pg=PA273&lpg=...

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The sheet flood deposits and sediment gravity flows indicate an outer alluvial fan environment . The conglomerate is more resistive to erosion and forms

https://books.google.com/books?id=OHSSFnAEHfsC&pg=PA75&lpg=P...

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latter sequence consists of outer alluvial fan deposits, mainly conglomerate and sandstone, which inter- finger with fine-grained lacustrine deposits

https://pdfs.semanticscholar.org/bc6c/e54aa0d16cc6d71662c5a6...
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fan конус выноса , веер
abyssal ~ подводный конус выноса
alluvial ~ аллювиальный конус выноса

https://lithology.ru/system/files/books/slovar.pdf