The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰期称为「伦冰期」，因其遗迹在加拿大南部伦湖北方的岩石中清晰可见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰「休伦冰」，因其遗迹在加拿大南部休伦湖北方的岩石中清晰可见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰期称为「休伦冰期」，因其遗迹在加拿大南部休伦北方的岩石中清晰可见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰期称为「休伦冰期」，因其遗迹在加拿大南部休伦湖北方的岩石中见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰期称为「休伦冰期」，因其遗迹在加拿大南部休伦湖北方的岩石中清晰可见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰期称为「休冰期」，因其遗迹在加拿大南部休湖北方的岩石中清晰可见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰称为「休伦冰」，遗迹在加拿大南部休伦湖北方的岩石中清晰可见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一次冰期称为「休伦冰期」，因其遗迹在加拿休伦湖北方的岩石中清晰可见。

The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.

第一称为「休伦」，因其遗迹在加拿大南部休伦湖北方的岩石中清晰可见。