"gap in time" is correct and usable in written English.
You can use it to refer to a period of time with no events or action. For example: "The researchers filled the gap in time between 1950 and 1975 with extensive research."
The tremendous gap in time between the crime and the trial made for a peculiar presentation.
Some pointed to the gap in time between the first mention of the tape's existence and its release as proof that it had been tampered with.
But if you think about it, there is almost always a gap in time — however infinitesimal it may seem — between seeing and comprehending.
"This gap in time," said Ms. McIntosh of Bell Atlantic, "will turn out to be a mere nanosecond when the final verdict is in".
However, fans of the old EA Sports Rugby series may well love it, if only because, despite the gap in time, there are so many parallels between them.
Filling the Grocery Gap In "Time to Revisit Food Deserts," the Fixes author David Bornstein highlights recent research about access to healthy foods in low-income neighborhoods.
Students were expected to reason that the gap in time between when the event took place and when the painting was created diminished the source's reliability as evidence of what happened at the event it depicts.
At the same time, women's free time is limited, with an extremely wide gender gap in time spent on care work and educating children and grandchildren, as well as on cooking and housework.
Despite the gap in time and place, the resemblance between the 17th century royal retreat and the Greene and Greene houses of the early 1900s are close enough that one could be mistaken for the other.
Critics, particularly those in the Progressive Movement that had been vital to other political reforms, argued that shrinking the gap in time between elections and taking office amounted to an immediate call to public service.
