(Image credit: Getty Images) Not even blue-chip strength could lift the oldest of the three main U.S. equity indexes into the green on Tuesday, and technology dragged on the relative newcomers amid questions about the durability of the market's major trend. A big earnings season is unfolding, the April Fed meeting is underway, and the bottleneck at the Strait of Hormuz is unresolved. At the closing bell, the Dow Jones Industrial Average was down 0.06% at 49,136, the broad-based S&P 500 had lost 0.5% to 7,138 and the tech-heavy Nasdaq Composite had shed 0.9% to 24,663. That's despite good fundamentals. "We have a quarter of S&P 500 companies' reports in so far," Ritholtz Wealth Management CEO Josh Brown observes about the earnings calendar . And we're seeing the sixth consecutive earnings season of double-digit profit growth. From just $107.88 $24.99 for Kiplinger Personal Finance Become a smarter, better informed investor.…