The variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

但纹层厚度变化可能揭示出小冰期沉积减少和上个世纪六十年代之后沉积增加。

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」，因其遗迹在加拿大湖北方岩石中清晰可见。

The variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

但纹层厚度的变化可出小冰期沉积通量的减少和上个世纪六十年代之后沉积通量的增加。

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 variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

但纹层厚度的变化可能揭示出小冰期量的减少和上个世纪六十年代之后量的增加。

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 variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

但纹层厚度的变化可能揭示出小冰沉积通量的减少和上个世纪六十年代之后沉积通量的增加。

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「休冰」，遗迹在加拿大南部休湖北方的岩石中清晰可见。

The variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

但纹层厚度的变化可能揭示出小冰通量的减少和上个世纪六十年代之后通量的增加。

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「休冰」，因其遗迹在加拿大南部休湖北方的岩石中清晰可见。

The variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

厚度的变化可能揭示出小冰期沉积通量的减少和上个世纪六十年代之后沉积通量的增加。

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休湖北方的岩石中清晰可见。

The variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

但纹层厚度的变化可出小冰期沉积通量的减少和上个世纪六十年代之后沉积通量的增加。

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 variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

但纹层厚度变化可能揭示出小冰期沉积通量和个世纪六十年代之后沉积通量增加。

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岩石中清晰可见。

The variation of varve thickness may show a decrease of sediment flux during the Little Ice Age, and an increase of sediment flux after 1960s.

层厚度的变化可能揭示出小冰期沉积通量的减少和上个世纪六十年代之后沉积通量的增加。

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。