"bedrock value" is correct and usable in written English.
You can use it to refer to something that is fundamental and foundational. For example, "The CEO's bedrock value was that customers always come first."
Freedom of speech is a bedrock value at Princeton and every great university.
We hope that whatever bill emerges will continue to protect and unite families, preserving and strengthening a bedrock value of America's immigration system.
In truth, what he violates by his statements are not mere norms but democratic principles so widely shared and so deeply important that "bedrock value" is closer to the mark than "democratic norm".
During his old day job, Mr. Racioppo often traveled to neighborhoods that were home to growing numbers of Latinos steeped in Catholic tradition or African-Americans for whom faith was a bedrock value, especially during hard times.
The party also faces the burden of trying to advance what Mr. Cantor describes as its bedrock value — smaller government — in the face of considerable evidence that the American public wants an increasingly active government to deal with the economic crisis.
BEIJING — Chinese students, already immersed in classes and textbooks that promote nationalist loyalty to the Communist Party as a bedrock value, must be made even more patriotic and devoted to the party, even when they are studying in universities abroad, according to a new directive sent to education officials.
