Last Updated：2025/11/26
Sentence
その採石場で露出している、約1億6,350万年から1億5,730万年前の後期ジュラ紀に堆積したサンゴ起源の石灰岩は、古代の礁構造を示し、当時の海面変動を復元する手がかりとなる。
Quizzes for review
Oxfordian coral-derived limestones exposed in the quarry reveal ancient reef structures and help reconstruct sea-level changes from the Late Jurassic.
See correct answer
Oxfordian coral-derived limestones exposed in the quarry reveal ancient reef structures and help reconstruct sea-level changes from the Late Jurassic.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
