Are pyroxenites always melting before peridotites?
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Pyroxenites do not always melt before peridotites. The melting behavior of pyroxenites and peridotites depends on various factors such as the abundance of orthopyroxene and the presence of hydrous phases. In some cases, pyroxenites can undergo melting reactions similar to peridotites, resulting in similar melt compositions . However, when orthopyroxene is absent, pyroxenites can have a distinct melting behavior, leading to the production of melts that are strongly depleted in SiO2 compared to peridotite-derived melts . The presence of pyroxenites in a heterogeneous mantle can contribute significantly to total melt production, with pyroxenites potentially accounting for up to 40% of the total melt . Therefore, the melting behavior of pyroxenites and peridotites can vary depending on the specific conditions and compositions of the rocks involved.
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| The paper does not directly address the question of whether pyroxenites always melt before peridotites. The paper focuses on the mineral and bulk rock compositions of metaperidotites and their relationships with associated eclogites in the Alag Khadny accretionary complex in SW Mongolia. | |
| The paper does not directly answer the question of whether pyroxenites always melt before peridotites. | |
57 Citations | The paper does not directly answer the question of whether pyroxenites always melt before peridotites. The paper discusses how the presence of pyroxenite in the mantle can affect mantle melting and crust formation, but it does not provide information on the relative melting temperatures of pyroxenites and peridotites. |
| The answer is not explicitly stated in the paper. The paper discusses the melting behavior of pyroxenites and peridotites but does not specifically mention whether pyroxenites always melt before peridotites. | |
10 Citations | The answer is not explicitly stated in the paper. The paper discusses the melting of hydrous pyroxenites and their compositions, but it does not directly compare the melting of pyroxenites and peridotites. |
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