White Skeletal Sand Beaches, Hawaii
By John Ebert and Paul Ebert
While on our trip to study and observe Hawaiian volcanism,
we were also fortunate to visit some of Hawaii's most beautiful
and popular beaches. Some of these beaches are made of soft, white
There are many types of skeletal sands. Different kinds of
skeletal particles in an ancient limestone reflect the age and
depositional setting of the sediment. The specific kinds of organisms
that exist in a given setting are determined by such factors as
water depth, water temperature, salinity, and turbidity.
Here are several pictures of Hapuna Beach, which lies on the
northwest side of the big island of Hawaii. It is composed of
skeletal sand. One can see that these sands make beautiful, picturesque
beaches. Also shown is a picture of a cemented skeletal sand beach
rock exposure at Hookipa State Park, Maui.