Meanings of mark contrasts in English

He had been unconscious of the marked contrasts which Carrie had observed.

In the dining-room, where the table was set for supper, there were marked contrasts.

What marked contrasts are found in Herrick and in nearly all the poets of this period?

"I like such marked contrasts in husband and wife," remarked Alice.

If in the throngs on the streets there were often marked contrasts, Keith was too exhilarated to remark it-atleast, at first.

Their physical and intellectual superiority over the other North Coast Indians, and also marked contrasts in the structure of their language, denote a different origin.

In character and antecedents his younger brother, Graydon Muir, who was also an inmate of his family, presented many marked contrasts to the elder man.

I assume a world of marked varieties of man, and only want to show how less marked contrasts would probably and naturally arise in each.