Definition of ultrabasic in English:

ultrabasic

adjective ˌʌltrəˈbɛɪsɪkˌəltrəˈbāsik

Geology

Relating to or denoting igneous rocks having a silica content less than 45 per cent by weight.
Example sentencesExamples
- This convergence gave rise to southward thrusting of the Yixieke forearc in Ordovician-Early Silurian time, which then led to obduction of the Buziwan ultrabasic rocks southward over the Kudi terrane.
- Their southward imbrication within the Kudi gneisses, the similar lithology and occurrence close to the Buziwan ultrabasic rocks near Kudi village may indicate they could have been part of Buziwan ophiolite.
- On the other hand, the Kudi gneisses are imbricated with an ophiolitic slice south to Kudi, and overthrust by the Buziwan ultrabasic rocks.
- Major shear zones containing basic and ultrabasic igneous rocks are interpreted as suture zones.
- Jansen also describes gabbro, diabase, ultrabasic rocks and Permian limestones in a comparable section on Naxos.

Definition of ultrabasic in US English:

ultrabasic

adjectiveˌəltrəˈbāsik

Geology

Relating to or denoting igneous rocks having a silica content less than 45 percent by weight, most of which are also ultramafic.
Compare with ultramafic
Example sentencesExamples
- This convergence gave rise to southward thrusting of the Yixieke forearc in Ordovician-Early Silurian time, which then led to obduction of the Buziwan ultrabasic rocks southward over the Kudi terrane.
- On the other hand, the Kudi gneisses are imbricated with an ophiolitic slice south to Kudi, and overthrust by the Buziwan ultrabasic rocks.
- Jansen also describes gabbro, diabase, ultrabasic rocks and Permian limestones in a comparable section on Naxos.
- Major shear zones containing basic and ultrabasic igneous rocks are interpreted as suture zones.
- Their southward imbrication within the Kudi gneisses, the similar lithology and occurrence close to the Buziwan ultrabasic rocks near Kudi village may indicate they could have been part of Buziwan ophiolite.

单词	ultrabasic
释义	Definition of ultrabasic in English: ultrabasic adjective ˌʌltrəˈbɛɪsɪkˌəltrəˈbāsik Geology Relating to or denoting igneous rocks having a silica content less than 45 per cent by weight. Example sentencesExamples This convergence gave rise to southward thrusting of the Yixieke forearc in Ordovician-Early Silurian time, which then led to obduction of the Buziwan ultrabasic rocks southward over the Kudi terrane. Their southward imbrication within the Kudi gneisses, the similar lithology and occurrence close to the Buziwan ultrabasic rocks near Kudi village may indicate they could have been part of Buziwan ophiolite. On the other hand, the Kudi gneisses are imbricated with an ophiolitic slice south to Kudi, and overthrust by the Buziwan ultrabasic rocks. Major shear zones containing basic and ultrabasic igneous rocks are interpreted as suture zones. Jansen also describes gabbro, diabase, ultrabasic rocks and Permian limestones in a comparable section on Naxos. Definition of ultrabasic in US English: ultrabasic adjectiveˌəltrəˈbāsik Geology Relating to or denoting igneous rocks having a silica content less than 45 percent by weight, most of which are also ultramafic. Compare with ultramafic Example sentencesExamples This convergence gave rise to southward thrusting of the Yixieke forearc in Ordovician-Early Silurian time, which then led to obduction of the Buziwan ultrabasic rocks southward over the Kudi terrane. On the other hand, the Kudi gneisses are imbricated with an ophiolitic slice south to Kudi, and overthrust by the Buziwan ultrabasic rocks. Jansen also describes gabbro, diabase, ultrabasic rocks and Permian limestones in a comparable section on Naxos. Major shear zones containing basic and ultrabasic igneous rocks are interpreted as suture zones. Their southward imbrication within the Kudi gneisses, the similar lithology and occurrence close to the Buziwan ultrabasic rocks near Kudi village may indicate they could have been part of Buziwan ophiolite.
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