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「冰期」，因其遗迹在加拿大南湖北方的岩石中清可见。

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「冰期」，因其遗迹在加拿大南部北方的岩石中清可见。

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」，因在加拿大南部休伦湖北方的岩石中清可见。

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」，因其遗迹大南部休伦湖北方的岩石中清可见。

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「伦冰期」，因其遗迹在加拿大南伦湖北方的岩石中清可见。

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岩石中清可见。

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的岩石中清可见。

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.

第一次为「休伦」，因其遗迹在加拿大南部休伦湖北方的岩石中清可见。